1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Copyright IBM Corp. 2007, 2009 4 * Author(s): Utz Bacher <utz.bacher@de.ibm.com>, 5 * Frank Pavlic <fpavlic@de.ibm.com>, 6 * Thomas Spatzier <tspat@de.ibm.com>, 7 * Frank Blaschka <frank.blaschka@de.ibm.com> 8 */ 9 10 #define KMSG_COMPONENT "qeth" 11 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt 12 13 #include <linux/module.h> 14 #include <linux/moduleparam.h> 15 #include <linux/string.h> 16 #include <linux/errno.h> 17 #include <linux/kernel.h> 18 #include <linux/ip.h> 19 #include <linux/tcp.h> 20 #include <linux/mii.h> 21 #include <linux/kthread.h> 22 #include <linux/slab.h> 23 #include <linux/if_vlan.h> 24 #include <linux/netdevice.h> 25 #include <linux/netdev_features.h> 26 #include <linux/skbuff.h> 27 28 #include <net/iucv/af_iucv.h> 29 #include <net/dsfield.h> 30 31 #include <asm/ebcdic.h> 32 #include <asm/chpid.h> 33 #include <asm/io.h> 34 #include <asm/sysinfo.h> 35 #include <asm/compat.h> 36 #include <asm/diag.h> 37 #include <asm/cio.h> 38 #include <asm/ccwdev.h> 39 #include <asm/cpcmd.h> 40 41 #include "qeth_core.h" 42 43 struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS] = { 44 /* define dbf - Name, Pages, Areas, Maxlen, Level, View, Handle */ 45 /* N P A M L V H */ 46 [QETH_DBF_SETUP] = {"qeth_setup", 47 8, 1, 8, 5, &debug_hex_ascii_view, NULL}, 48 [QETH_DBF_MSG] = {"qeth_msg", 8, 1, 11 * sizeof(long), 3, 49 &debug_sprintf_view, NULL}, 50 [QETH_DBF_CTRL] = {"qeth_control", 51 8, 1, QETH_DBF_CTRL_LEN, 5, &debug_hex_ascii_view, NULL}, 52 }; 53 EXPORT_SYMBOL_GPL(qeth_dbf); 54 55 struct qeth_card_list_struct qeth_core_card_list; 56 EXPORT_SYMBOL_GPL(qeth_core_card_list); 57 struct kmem_cache *qeth_core_header_cache; 58 EXPORT_SYMBOL_GPL(qeth_core_header_cache); 59 static struct kmem_cache *qeth_qdio_outbuf_cache; 60 61 static struct device *qeth_core_root_dev; 62 static struct lock_class_key qdio_out_skb_queue_key; 63 static struct mutex qeth_mod_mutex; 64 65 static void qeth_send_control_data_cb(struct qeth_channel *, 66 struct qeth_cmd_buffer *); 67 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *); 68 static void qeth_setup_ccw(struct qeth_channel *, unsigned char *, __u32); 69 static void qeth_free_buffer_pool(struct qeth_card *); 70 static int qeth_qdio_establish(struct qeth_card *); 71 static void qeth_free_qdio_buffers(struct qeth_card *); 72 static void qeth_notify_skbs(struct qeth_qdio_out_q *queue, 73 struct qeth_qdio_out_buffer *buf, 74 enum iucv_tx_notify notification); 75 static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf); 76 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue, 77 struct qeth_qdio_out_buffer *buf, 78 enum qeth_qdio_buffer_states newbufstate); 79 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *, int); 80 81 struct workqueue_struct *qeth_wq; 82 EXPORT_SYMBOL_GPL(qeth_wq); 83 84 int qeth_card_hw_is_reachable(struct qeth_card *card) 85 { 86 return (card->state == CARD_STATE_SOFTSETUP) || 87 (card->state == CARD_STATE_UP); 88 } 89 EXPORT_SYMBOL_GPL(qeth_card_hw_is_reachable); 90 91 static void qeth_close_dev_handler(struct work_struct *work) 92 { 93 struct qeth_card *card; 94 95 card = container_of(work, struct qeth_card, close_dev_work); 96 QETH_CARD_TEXT(card, 2, "cldevhdl"); 97 rtnl_lock(); 98 dev_close(card->dev); 99 rtnl_unlock(); 100 ccwgroup_set_offline(card->gdev); 101 } 102 103 void qeth_close_dev(struct qeth_card *card) 104 { 105 QETH_CARD_TEXT(card, 2, "cldevsubm"); 106 queue_work(qeth_wq, &card->close_dev_work); 107 } 108 EXPORT_SYMBOL_GPL(qeth_close_dev); 109 110 static const char *qeth_get_cardname(struct qeth_card *card) 111 { 112 if (card->info.guestlan) { 113 switch (card->info.type) { 114 case QETH_CARD_TYPE_OSD: 115 return " Virtual NIC QDIO"; 116 case QETH_CARD_TYPE_IQD: 117 return " Virtual NIC Hiper"; 118 case QETH_CARD_TYPE_OSM: 119 return " Virtual NIC QDIO - OSM"; 120 case QETH_CARD_TYPE_OSX: 121 return " Virtual NIC QDIO - OSX"; 122 default: 123 return " unknown"; 124 } 125 } else { 126 switch (card->info.type) { 127 case QETH_CARD_TYPE_OSD: 128 return " OSD Express"; 129 case QETH_CARD_TYPE_IQD: 130 return " HiperSockets"; 131 case QETH_CARD_TYPE_OSN: 132 return " OSN QDIO"; 133 case QETH_CARD_TYPE_OSM: 134 return " OSM QDIO"; 135 case QETH_CARD_TYPE_OSX: 136 return " OSX QDIO"; 137 default: 138 return " unknown"; 139 } 140 } 141 return " n/a"; 142 } 143 144 /* max length to be returned: 14 */ 145 const char *qeth_get_cardname_short(struct qeth_card *card) 146 { 147 if (card->info.guestlan) { 148 switch (card->info.type) { 149 case QETH_CARD_TYPE_OSD: 150 return "Virt.NIC QDIO"; 151 case QETH_CARD_TYPE_IQD: 152 return "Virt.NIC Hiper"; 153 case QETH_CARD_TYPE_OSM: 154 return "Virt.NIC OSM"; 155 case QETH_CARD_TYPE_OSX: 156 return "Virt.NIC OSX"; 157 default: 158 return "unknown"; 159 } 160 } else { 161 switch (card->info.type) { 162 case QETH_CARD_TYPE_OSD: 163 switch (card->info.link_type) { 164 case QETH_LINK_TYPE_FAST_ETH: 165 return "OSD_100"; 166 case QETH_LINK_TYPE_HSTR: 167 return "HSTR"; 168 case QETH_LINK_TYPE_GBIT_ETH: 169 return "OSD_1000"; 170 case QETH_LINK_TYPE_10GBIT_ETH: 171 return "OSD_10GIG"; 172 case QETH_LINK_TYPE_LANE_ETH100: 173 return "OSD_FE_LANE"; 174 case QETH_LINK_TYPE_LANE_TR: 175 return "OSD_TR_LANE"; 176 case QETH_LINK_TYPE_LANE_ETH1000: 177 return "OSD_GbE_LANE"; 178 case QETH_LINK_TYPE_LANE: 179 return "OSD_ATM_LANE"; 180 default: 181 return "OSD_Express"; 182 } 183 case QETH_CARD_TYPE_IQD: 184 return "HiperSockets"; 185 case QETH_CARD_TYPE_OSN: 186 return "OSN"; 187 case QETH_CARD_TYPE_OSM: 188 return "OSM_1000"; 189 case QETH_CARD_TYPE_OSX: 190 return "OSX_10GIG"; 191 default: 192 return "unknown"; 193 } 194 } 195 return "n/a"; 196 } 197 198 void qeth_set_recovery_task(struct qeth_card *card) 199 { 200 card->recovery_task = current; 201 } 202 EXPORT_SYMBOL_GPL(qeth_set_recovery_task); 203 204 void qeth_clear_recovery_task(struct qeth_card *card) 205 { 206 card->recovery_task = NULL; 207 } 208 EXPORT_SYMBOL_GPL(qeth_clear_recovery_task); 209 210 static bool qeth_is_recovery_task(const struct qeth_card *card) 211 { 212 return card->recovery_task == current; 213 } 214 215 void qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads, 216 int clear_start_mask) 217 { 218 unsigned long flags; 219 220 spin_lock_irqsave(&card->thread_mask_lock, flags); 221 card->thread_allowed_mask = threads; 222 if (clear_start_mask) 223 card->thread_start_mask &= threads; 224 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 225 wake_up(&card->wait_q); 226 } 227 EXPORT_SYMBOL_GPL(qeth_set_allowed_threads); 228 229 int qeth_threads_running(struct qeth_card *card, unsigned long threads) 230 { 231 unsigned long flags; 232 int rc = 0; 233 234 spin_lock_irqsave(&card->thread_mask_lock, flags); 235 rc = (card->thread_running_mask & threads); 236 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 237 return rc; 238 } 239 EXPORT_SYMBOL_GPL(qeth_threads_running); 240 241 int qeth_wait_for_threads(struct qeth_card *card, unsigned long threads) 242 { 243 if (qeth_is_recovery_task(card)) 244 return 0; 245 return wait_event_interruptible(card->wait_q, 246 qeth_threads_running(card, threads) == 0); 247 } 248 EXPORT_SYMBOL_GPL(qeth_wait_for_threads); 249 250 void qeth_clear_working_pool_list(struct qeth_card *card) 251 { 252 struct qeth_buffer_pool_entry *pool_entry, *tmp; 253 254 QETH_CARD_TEXT(card, 5, "clwrklst"); 255 list_for_each_entry_safe(pool_entry, tmp, 256 &card->qdio.in_buf_pool.entry_list, list){ 257 list_del(&pool_entry->list); 258 } 259 } 260 EXPORT_SYMBOL_GPL(qeth_clear_working_pool_list); 261 262 static int qeth_alloc_buffer_pool(struct qeth_card *card) 263 { 264 struct qeth_buffer_pool_entry *pool_entry; 265 void *ptr; 266 int i, j; 267 268 QETH_CARD_TEXT(card, 5, "alocpool"); 269 for (i = 0; i < card->qdio.init_pool.buf_count; ++i) { 270 pool_entry = kzalloc(sizeof(*pool_entry), GFP_KERNEL); 271 if (!pool_entry) { 272 qeth_free_buffer_pool(card); 273 return -ENOMEM; 274 } 275 for (j = 0; j < QETH_MAX_BUFFER_ELEMENTS(card); ++j) { 276 ptr = (void *) __get_free_page(GFP_KERNEL); 277 if (!ptr) { 278 while (j > 0) 279 free_page((unsigned long) 280 pool_entry->elements[--j]); 281 kfree(pool_entry); 282 qeth_free_buffer_pool(card); 283 return -ENOMEM; 284 } 285 pool_entry->elements[j] = ptr; 286 } 287 list_add(&pool_entry->init_list, 288 &card->qdio.init_pool.entry_list); 289 } 290 return 0; 291 } 292 293 int qeth_realloc_buffer_pool(struct qeth_card *card, int bufcnt) 294 { 295 QETH_CARD_TEXT(card, 2, "realcbp"); 296 297 if ((card->state != CARD_STATE_DOWN) && 298 (card->state != CARD_STATE_RECOVER)) 299 return -EPERM; 300 301 /* TODO: steel/add buffers from/to a running card's buffer pool (?) */ 302 qeth_clear_working_pool_list(card); 303 qeth_free_buffer_pool(card); 304 card->qdio.in_buf_pool.buf_count = bufcnt; 305 card->qdio.init_pool.buf_count = bufcnt; 306 return qeth_alloc_buffer_pool(card); 307 } 308 EXPORT_SYMBOL_GPL(qeth_realloc_buffer_pool); 309 310 static void qeth_free_qdio_queue(struct qeth_qdio_q *q) 311 { 312 if (!q) 313 return; 314 315 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q); 316 kfree(q); 317 } 318 319 static struct qeth_qdio_q *qeth_alloc_qdio_queue(void) 320 { 321 struct qeth_qdio_q *q = kzalloc(sizeof(*q), GFP_KERNEL); 322 int i; 323 324 if (!q) 325 return NULL; 326 327 if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) { 328 kfree(q); 329 return NULL; 330 } 331 332 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) 333 q->bufs[i].buffer = q->qdio_bufs[i]; 334 335 QETH_DBF_HEX(SETUP, 2, &q, sizeof(void *)); 336 return q; 337 } 338 339 static int qeth_cq_init(struct qeth_card *card) 340 { 341 int rc; 342 343 if (card->options.cq == QETH_CQ_ENABLED) { 344 QETH_DBF_TEXT(SETUP, 2, "cqinit"); 345 qdio_reset_buffers(card->qdio.c_q->qdio_bufs, 346 QDIO_MAX_BUFFERS_PER_Q); 347 card->qdio.c_q->next_buf_to_init = 127; 348 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 349 card->qdio.no_in_queues - 1, 0, 350 127); 351 if (rc) { 352 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 353 goto out; 354 } 355 } 356 rc = 0; 357 out: 358 return rc; 359 } 360 361 static int qeth_alloc_cq(struct qeth_card *card) 362 { 363 int rc; 364 365 if (card->options.cq == QETH_CQ_ENABLED) { 366 int i; 367 struct qdio_outbuf_state *outbuf_states; 368 369 QETH_DBF_TEXT(SETUP, 2, "cqon"); 370 card->qdio.c_q = qeth_alloc_qdio_queue(); 371 if (!card->qdio.c_q) { 372 rc = -1; 373 goto kmsg_out; 374 } 375 card->qdio.no_in_queues = 2; 376 card->qdio.out_bufstates = 377 kzalloc(card->qdio.no_out_queues * 378 QDIO_MAX_BUFFERS_PER_Q * 379 sizeof(struct qdio_outbuf_state), GFP_KERNEL); 380 outbuf_states = card->qdio.out_bufstates; 381 if (outbuf_states == NULL) { 382 rc = -1; 383 goto free_cq_out; 384 } 385 for (i = 0; i < card->qdio.no_out_queues; ++i) { 386 card->qdio.out_qs[i]->bufstates = outbuf_states; 387 outbuf_states += QDIO_MAX_BUFFERS_PER_Q; 388 } 389 } else { 390 QETH_DBF_TEXT(SETUP, 2, "nocq"); 391 card->qdio.c_q = NULL; 392 card->qdio.no_in_queues = 1; 393 } 394 QETH_DBF_TEXT_(SETUP, 2, "iqc%d", card->qdio.no_in_queues); 395 rc = 0; 396 out: 397 return rc; 398 free_cq_out: 399 qeth_free_qdio_queue(card->qdio.c_q); 400 card->qdio.c_q = NULL; 401 kmsg_out: 402 dev_err(&card->gdev->dev, "Failed to create completion queue\n"); 403 goto out; 404 } 405 406 static void qeth_free_cq(struct qeth_card *card) 407 { 408 if (card->qdio.c_q) { 409 --card->qdio.no_in_queues; 410 qeth_free_qdio_queue(card->qdio.c_q); 411 card->qdio.c_q = NULL; 412 } 413 kfree(card->qdio.out_bufstates); 414 card->qdio.out_bufstates = NULL; 415 } 416 417 static enum iucv_tx_notify qeth_compute_cq_notification(int sbalf15, 418 int delayed) 419 { 420 enum iucv_tx_notify n; 421 422 switch (sbalf15) { 423 case 0: 424 n = delayed ? TX_NOTIFY_DELAYED_OK : TX_NOTIFY_OK; 425 break; 426 case 4: 427 case 16: 428 case 17: 429 case 18: 430 n = delayed ? TX_NOTIFY_DELAYED_UNREACHABLE : 431 TX_NOTIFY_UNREACHABLE; 432 break; 433 default: 434 n = delayed ? TX_NOTIFY_DELAYED_GENERALERROR : 435 TX_NOTIFY_GENERALERROR; 436 break; 437 } 438 439 return n; 440 } 441 442 static void qeth_cleanup_handled_pending(struct qeth_qdio_out_q *q, int bidx, 443 int forced_cleanup) 444 { 445 if (q->card->options.cq != QETH_CQ_ENABLED) 446 return; 447 448 if (q->bufs[bidx]->next_pending != NULL) { 449 struct qeth_qdio_out_buffer *head = q->bufs[bidx]; 450 struct qeth_qdio_out_buffer *c = q->bufs[bidx]->next_pending; 451 452 while (c) { 453 if (forced_cleanup || 454 atomic_read(&c->state) == 455 QETH_QDIO_BUF_HANDLED_DELAYED) { 456 struct qeth_qdio_out_buffer *f = c; 457 QETH_CARD_TEXT(f->q->card, 5, "fp"); 458 QETH_CARD_TEXT_(f->q->card, 5, "%lx", (long) f); 459 /* release here to avoid interleaving between 460 outbound tasklet and inbound tasklet 461 regarding notifications and lifecycle */ 462 qeth_release_skbs(c); 463 464 c = f->next_pending; 465 WARN_ON_ONCE(head->next_pending != f); 466 head->next_pending = c; 467 kmem_cache_free(qeth_qdio_outbuf_cache, f); 468 } else { 469 head = c; 470 c = c->next_pending; 471 } 472 473 } 474 } 475 if (forced_cleanup && (atomic_read(&(q->bufs[bidx]->state)) == 476 QETH_QDIO_BUF_HANDLED_DELAYED)) { 477 /* for recovery situations */ 478 q->bufs[bidx]->aob = q->bufstates[bidx].aob; 479 qeth_init_qdio_out_buf(q, bidx); 480 QETH_CARD_TEXT(q->card, 2, "clprecov"); 481 } 482 } 483 484 485 static void qeth_qdio_handle_aob(struct qeth_card *card, 486 unsigned long phys_aob_addr) 487 { 488 struct qaob *aob; 489 struct qeth_qdio_out_buffer *buffer; 490 enum iucv_tx_notify notification; 491 492 aob = (struct qaob *) phys_to_virt(phys_aob_addr); 493 QETH_CARD_TEXT(card, 5, "haob"); 494 QETH_CARD_TEXT_(card, 5, "%lx", phys_aob_addr); 495 buffer = (struct qeth_qdio_out_buffer *) aob->user1; 496 QETH_CARD_TEXT_(card, 5, "%lx", aob->user1); 497 498 if (atomic_cmpxchg(&buffer->state, QETH_QDIO_BUF_PRIMED, 499 QETH_QDIO_BUF_IN_CQ) == QETH_QDIO_BUF_PRIMED) { 500 notification = TX_NOTIFY_OK; 501 } else { 502 WARN_ON_ONCE(atomic_read(&buffer->state) != 503 QETH_QDIO_BUF_PENDING); 504 atomic_set(&buffer->state, QETH_QDIO_BUF_IN_CQ); 505 notification = TX_NOTIFY_DELAYED_OK; 506 } 507 508 if (aob->aorc != 0) { 509 QETH_CARD_TEXT_(card, 2, "aorc%02X", aob->aorc); 510 notification = qeth_compute_cq_notification(aob->aorc, 1); 511 } 512 qeth_notify_skbs(buffer->q, buffer, notification); 513 514 buffer->aob = NULL; 515 qeth_clear_output_buffer(buffer->q, buffer, 516 QETH_QDIO_BUF_HANDLED_DELAYED); 517 518 /* from here on: do not touch buffer anymore */ 519 qdio_release_aob(aob); 520 } 521 522 static inline int qeth_is_cq(struct qeth_card *card, unsigned int queue) 523 { 524 return card->options.cq == QETH_CQ_ENABLED && 525 card->qdio.c_q != NULL && 526 queue != 0 && 527 queue == card->qdio.no_in_queues - 1; 528 } 529 530 531 static int qeth_issue_next_read(struct qeth_card *card) 532 { 533 int rc; 534 struct qeth_cmd_buffer *iob; 535 536 QETH_CARD_TEXT(card, 5, "issnxrd"); 537 if (card->read.state != CH_STATE_UP) 538 return -EIO; 539 iob = qeth_get_buffer(&card->read); 540 if (!iob) { 541 dev_warn(&card->gdev->dev, "The qeth device driver " 542 "failed to recover an error on the device\n"); 543 QETH_DBF_MESSAGE(2, "%s issue_next_read failed: no iob " 544 "available\n", dev_name(&card->gdev->dev)); 545 return -ENOMEM; 546 } 547 qeth_setup_ccw(&card->read, iob->data, QETH_BUFSIZE); 548 QETH_CARD_TEXT(card, 6, "noirqpnd"); 549 rc = ccw_device_start(card->read.ccwdev, &card->read.ccw, 550 (addr_t) iob, 0, 0); 551 if (rc) { 552 QETH_DBF_MESSAGE(2, "%s error in starting next read ccw! " 553 "rc=%i\n", dev_name(&card->gdev->dev), rc); 554 atomic_set(&card->read.irq_pending, 0); 555 card->read_or_write_problem = 1; 556 qeth_schedule_recovery(card); 557 wake_up(&card->wait_q); 558 } 559 return rc; 560 } 561 562 static struct qeth_reply *qeth_alloc_reply(struct qeth_card *card) 563 { 564 struct qeth_reply *reply; 565 566 reply = kzalloc(sizeof(struct qeth_reply), GFP_ATOMIC); 567 if (reply) { 568 refcount_set(&reply->refcnt, 1); 569 atomic_set(&reply->received, 0); 570 reply->card = card; 571 } 572 return reply; 573 } 574 575 static void qeth_get_reply(struct qeth_reply *reply) 576 { 577 refcount_inc(&reply->refcnt); 578 } 579 580 static void qeth_put_reply(struct qeth_reply *reply) 581 { 582 if (refcount_dec_and_test(&reply->refcnt)) 583 kfree(reply); 584 } 585 586 static void qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd, int rc, 587 struct qeth_card *card) 588 { 589 char *ipa_name; 590 int com = cmd->hdr.command; 591 ipa_name = qeth_get_ipa_cmd_name(com); 592 if (rc) 593 QETH_DBF_MESSAGE(2, "IPA: %s(x%X) for %s/%s returned " 594 "x%X \"%s\"\n", 595 ipa_name, com, dev_name(&card->gdev->dev), 596 QETH_CARD_IFNAME(card), rc, 597 qeth_get_ipa_msg(rc)); 598 else 599 QETH_DBF_MESSAGE(5, "IPA: %s(x%X) for %s/%s succeeded\n", 600 ipa_name, com, dev_name(&card->gdev->dev), 601 QETH_CARD_IFNAME(card)); 602 } 603 604 static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card, 605 struct qeth_cmd_buffer *iob) 606 { 607 struct qeth_ipa_cmd *cmd = NULL; 608 609 QETH_CARD_TEXT(card, 5, "chkipad"); 610 if (IS_IPA(iob->data)) { 611 cmd = (struct qeth_ipa_cmd *) PDU_ENCAPSULATION(iob->data); 612 if (IS_IPA_REPLY(cmd)) { 613 if (cmd->hdr.command != IPA_CMD_SETCCID && 614 cmd->hdr.command != IPA_CMD_DELCCID && 615 cmd->hdr.command != IPA_CMD_MODCCID && 616 cmd->hdr.command != IPA_CMD_SET_DIAG_ASS) 617 qeth_issue_ipa_msg(cmd, 618 cmd->hdr.return_code, card); 619 return cmd; 620 } else { 621 switch (cmd->hdr.command) { 622 case IPA_CMD_STOPLAN: 623 if (cmd->hdr.return_code == 624 IPA_RC_VEPA_TO_VEB_TRANSITION) { 625 dev_err(&card->gdev->dev, 626 "Interface %s is down because the " 627 "adjacent port is no longer in " 628 "reflective relay mode\n", 629 QETH_CARD_IFNAME(card)); 630 qeth_close_dev(card); 631 } else { 632 dev_warn(&card->gdev->dev, 633 "The link for interface %s on CHPID" 634 " 0x%X failed\n", 635 QETH_CARD_IFNAME(card), 636 card->info.chpid); 637 qeth_issue_ipa_msg(cmd, 638 cmd->hdr.return_code, card); 639 } 640 card->lan_online = 0; 641 if (card->dev && netif_carrier_ok(card->dev)) 642 netif_carrier_off(card->dev); 643 return NULL; 644 case IPA_CMD_STARTLAN: 645 dev_info(&card->gdev->dev, 646 "The link for %s on CHPID 0x%X has" 647 " been restored\n", 648 QETH_CARD_IFNAME(card), 649 card->info.chpid); 650 netif_carrier_on(card->dev); 651 card->lan_online = 1; 652 if (card->info.hwtrap) 653 card->info.hwtrap = 2; 654 qeth_schedule_recovery(card); 655 return NULL; 656 case IPA_CMD_SETBRIDGEPORT_IQD: 657 case IPA_CMD_SETBRIDGEPORT_OSA: 658 case IPA_CMD_ADDRESS_CHANGE_NOTIF: 659 if (card->discipline->control_event_handler 660 (card, cmd)) 661 return cmd; 662 else 663 return NULL; 664 case IPA_CMD_MODCCID: 665 return cmd; 666 case IPA_CMD_REGISTER_LOCAL_ADDR: 667 QETH_CARD_TEXT(card, 3, "irla"); 668 break; 669 case IPA_CMD_UNREGISTER_LOCAL_ADDR: 670 QETH_CARD_TEXT(card, 3, "urla"); 671 break; 672 default: 673 QETH_DBF_MESSAGE(2, "Received data is IPA " 674 "but not a reply!\n"); 675 break; 676 } 677 } 678 } 679 return cmd; 680 } 681 682 void qeth_clear_ipacmd_list(struct qeth_card *card) 683 { 684 struct qeth_reply *reply, *r; 685 unsigned long flags; 686 687 QETH_CARD_TEXT(card, 4, "clipalst"); 688 689 spin_lock_irqsave(&card->lock, flags); 690 list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) { 691 qeth_get_reply(reply); 692 reply->rc = -EIO; 693 atomic_inc(&reply->received); 694 list_del_init(&reply->list); 695 wake_up(&reply->wait_q); 696 qeth_put_reply(reply); 697 } 698 spin_unlock_irqrestore(&card->lock, flags); 699 atomic_set(&card->write.irq_pending, 0); 700 } 701 EXPORT_SYMBOL_GPL(qeth_clear_ipacmd_list); 702 703 static int qeth_check_idx_response(struct qeth_card *card, 704 unsigned char *buffer) 705 { 706 if (!buffer) 707 return 0; 708 709 QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN); 710 if ((buffer[2] & 0xc0) == 0xc0) { 711 QETH_DBF_MESSAGE(2, "received an IDX TERMINATE " 712 "with cause code 0x%02x%s\n", 713 buffer[4], 714 ((buffer[4] == 0x22) ? 715 " -- try another portname" : "")); 716 QETH_CARD_TEXT(card, 2, "ckidxres"); 717 QETH_CARD_TEXT(card, 2, " idxterm"); 718 QETH_CARD_TEXT_(card, 2, " rc%d", -EIO); 719 if (buffer[4] == 0xf6) { 720 dev_err(&card->gdev->dev, 721 "The qeth device is not configured " 722 "for the OSI layer required by z/VM\n"); 723 return -EPERM; 724 } 725 return -EIO; 726 } 727 return 0; 728 } 729 730 static struct qeth_card *CARD_FROM_CDEV(struct ccw_device *cdev) 731 { 732 struct qeth_card *card = dev_get_drvdata(&((struct ccwgroup_device *) 733 dev_get_drvdata(&cdev->dev))->dev); 734 return card; 735 } 736 737 static void qeth_setup_ccw(struct qeth_channel *channel, unsigned char *iob, 738 __u32 len) 739 { 740 struct qeth_card *card; 741 742 card = CARD_FROM_CDEV(channel->ccwdev); 743 QETH_CARD_TEXT(card, 4, "setupccw"); 744 if (channel == &card->read) 745 memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1)); 746 else 747 memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1)); 748 channel->ccw.count = len; 749 channel->ccw.cda = (__u32) __pa(iob); 750 } 751 752 static struct qeth_cmd_buffer *__qeth_get_buffer(struct qeth_channel *channel) 753 { 754 __u8 index; 755 756 QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "getbuff"); 757 index = channel->io_buf_no; 758 do { 759 if (channel->iob[index].state == BUF_STATE_FREE) { 760 channel->iob[index].state = BUF_STATE_LOCKED; 761 channel->io_buf_no = (channel->io_buf_no + 1) % 762 QETH_CMD_BUFFER_NO; 763 memset(channel->iob[index].data, 0, QETH_BUFSIZE); 764 return channel->iob + index; 765 } 766 index = (index + 1) % QETH_CMD_BUFFER_NO; 767 } while (index != channel->io_buf_no); 768 769 return NULL; 770 } 771 772 void qeth_release_buffer(struct qeth_channel *channel, 773 struct qeth_cmd_buffer *iob) 774 { 775 unsigned long flags; 776 777 QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "relbuff"); 778 spin_lock_irqsave(&channel->iob_lock, flags); 779 memset(iob->data, 0, QETH_BUFSIZE); 780 iob->state = BUF_STATE_FREE; 781 iob->callback = qeth_send_control_data_cb; 782 iob->rc = 0; 783 spin_unlock_irqrestore(&channel->iob_lock, flags); 784 wake_up(&channel->wait_q); 785 } 786 EXPORT_SYMBOL_GPL(qeth_release_buffer); 787 788 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *channel) 789 { 790 struct qeth_cmd_buffer *buffer = NULL; 791 unsigned long flags; 792 793 spin_lock_irqsave(&channel->iob_lock, flags); 794 buffer = __qeth_get_buffer(channel); 795 spin_unlock_irqrestore(&channel->iob_lock, flags); 796 return buffer; 797 } 798 799 struct qeth_cmd_buffer *qeth_wait_for_buffer(struct qeth_channel *channel) 800 { 801 struct qeth_cmd_buffer *buffer; 802 wait_event(channel->wait_q, 803 ((buffer = qeth_get_buffer(channel)) != NULL)); 804 return buffer; 805 } 806 EXPORT_SYMBOL_GPL(qeth_wait_for_buffer); 807 808 void qeth_clear_cmd_buffers(struct qeth_channel *channel) 809 { 810 int cnt; 811 812 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) 813 qeth_release_buffer(channel, &channel->iob[cnt]); 814 channel->buf_no = 0; 815 channel->io_buf_no = 0; 816 } 817 EXPORT_SYMBOL_GPL(qeth_clear_cmd_buffers); 818 819 static void qeth_send_control_data_cb(struct qeth_channel *channel, 820 struct qeth_cmd_buffer *iob) 821 { 822 struct qeth_card *card; 823 struct qeth_reply *reply, *r; 824 struct qeth_ipa_cmd *cmd; 825 unsigned long flags; 826 int keep_reply; 827 int rc = 0; 828 829 card = CARD_FROM_CDEV(channel->ccwdev); 830 QETH_CARD_TEXT(card, 4, "sndctlcb"); 831 rc = qeth_check_idx_response(card, iob->data); 832 switch (rc) { 833 case 0: 834 break; 835 case -EIO: 836 qeth_clear_ipacmd_list(card); 837 qeth_schedule_recovery(card); 838 /* fall through */ 839 default: 840 goto out; 841 } 842 843 cmd = qeth_check_ipa_data(card, iob); 844 if ((cmd == NULL) && (card->state != CARD_STATE_DOWN)) 845 goto out; 846 /*in case of OSN : check if cmd is set */ 847 if (card->info.type == QETH_CARD_TYPE_OSN && 848 cmd && 849 cmd->hdr.command != IPA_CMD_STARTLAN && 850 card->osn_info.assist_cb != NULL) { 851 card->osn_info.assist_cb(card->dev, cmd); 852 goto out; 853 } 854 855 spin_lock_irqsave(&card->lock, flags); 856 list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) { 857 if ((reply->seqno == QETH_IDX_COMMAND_SEQNO) || 858 ((cmd) && (reply->seqno == cmd->hdr.seqno))) { 859 qeth_get_reply(reply); 860 list_del_init(&reply->list); 861 spin_unlock_irqrestore(&card->lock, flags); 862 keep_reply = 0; 863 if (reply->callback != NULL) { 864 if (cmd) { 865 reply->offset = (__u16)((char *)cmd - 866 (char *)iob->data); 867 keep_reply = reply->callback(card, 868 reply, 869 (unsigned long)cmd); 870 } else 871 keep_reply = reply->callback(card, 872 reply, 873 (unsigned long)iob); 874 } 875 if (cmd) 876 reply->rc = (u16) cmd->hdr.return_code; 877 else if (iob->rc) 878 reply->rc = iob->rc; 879 if (keep_reply) { 880 spin_lock_irqsave(&card->lock, flags); 881 list_add_tail(&reply->list, 882 &card->cmd_waiter_list); 883 spin_unlock_irqrestore(&card->lock, flags); 884 } else { 885 atomic_inc(&reply->received); 886 wake_up(&reply->wait_q); 887 } 888 qeth_put_reply(reply); 889 goto out; 890 } 891 } 892 spin_unlock_irqrestore(&card->lock, flags); 893 out: 894 memcpy(&card->seqno.pdu_hdr_ack, 895 QETH_PDU_HEADER_SEQ_NO(iob->data), 896 QETH_SEQ_NO_LENGTH); 897 qeth_release_buffer(channel, iob); 898 } 899 900 static int qeth_setup_channel(struct qeth_channel *channel) 901 { 902 int cnt; 903 904 QETH_DBF_TEXT(SETUP, 2, "setupch"); 905 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) { 906 channel->iob[cnt].data = 907 kzalloc(QETH_BUFSIZE, GFP_DMA|GFP_KERNEL); 908 if (channel->iob[cnt].data == NULL) 909 break; 910 channel->iob[cnt].state = BUF_STATE_FREE; 911 channel->iob[cnt].channel = channel; 912 channel->iob[cnt].callback = qeth_send_control_data_cb; 913 channel->iob[cnt].rc = 0; 914 } 915 if (cnt < QETH_CMD_BUFFER_NO) { 916 while (cnt-- > 0) 917 kfree(channel->iob[cnt].data); 918 return -ENOMEM; 919 } 920 channel->buf_no = 0; 921 channel->io_buf_no = 0; 922 atomic_set(&channel->irq_pending, 0); 923 spin_lock_init(&channel->iob_lock); 924 925 init_waitqueue_head(&channel->wait_q); 926 return 0; 927 } 928 929 static int qeth_set_thread_start_bit(struct qeth_card *card, 930 unsigned long thread) 931 { 932 unsigned long flags; 933 934 spin_lock_irqsave(&card->thread_mask_lock, flags); 935 if (!(card->thread_allowed_mask & thread) || 936 (card->thread_start_mask & thread)) { 937 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 938 return -EPERM; 939 } 940 card->thread_start_mask |= thread; 941 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 942 return 0; 943 } 944 945 void qeth_clear_thread_start_bit(struct qeth_card *card, unsigned long thread) 946 { 947 unsigned long flags; 948 949 spin_lock_irqsave(&card->thread_mask_lock, flags); 950 card->thread_start_mask &= ~thread; 951 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 952 wake_up(&card->wait_q); 953 } 954 EXPORT_SYMBOL_GPL(qeth_clear_thread_start_bit); 955 956 void qeth_clear_thread_running_bit(struct qeth_card *card, unsigned long thread) 957 { 958 unsigned long flags; 959 960 spin_lock_irqsave(&card->thread_mask_lock, flags); 961 card->thread_running_mask &= ~thread; 962 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 963 wake_up(&card->wait_q); 964 } 965 EXPORT_SYMBOL_GPL(qeth_clear_thread_running_bit); 966 967 static int __qeth_do_run_thread(struct qeth_card *card, unsigned long thread) 968 { 969 unsigned long flags; 970 int rc = 0; 971 972 spin_lock_irqsave(&card->thread_mask_lock, flags); 973 if (card->thread_start_mask & thread) { 974 if ((card->thread_allowed_mask & thread) && 975 !(card->thread_running_mask & thread)) { 976 rc = 1; 977 card->thread_start_mask &= ~thread; 978 card->thread_running_mask |= thread; 979 } else 980 rc = -EPERM; 981 } 982 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 983 return rc; 984 } 985 986 int qeth_do_run_thread(struct qeth_card *card, unsigned long thread) 987 { 988 int rc = 0; 989 990 wait_event(card->wait_q, 991 (rc = __qeth_do_run_thread(card, thread)) >= 0); 992 return rc; 993 } 994 EXPORT_SYMBOL_GPL(qeth_do_run_thread); 995 996 void qeth_schedule_recovery(struct qeth_card *card) 997 { 998 QETH_CARD_TEXT(card, 2, "startrec"); 999 if (qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD) == 0) 1000 schedule_work(&card->kernel_thread_starter); 1001 } 1002 EXPORT_SYMBOL_GPL(qeth_schedule_recovery); 1003 1004 static int qeth_get_problem(struct ccw_device *cdev, struct irb *irb) 1005 { 1006 int dstat, cstat; 1007 char *sense; 1008 struct qeth_card *card; 1009 1010 sense = (char *) irb->ecw; 1011 cstat = irb->scsw.cmd.cstat; 1012 dstat = irb->scsw.cmd.dstat; 1013 card = CARD_FROM_CDEV(cdev); 1014 1015 if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK | 1016 SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK | 1017 SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) { 1018 QETH_CARD_TEXT(card, 2, "CGENCHK"); 1019 dev_warn(&cdev->dev, "The qeth device driver " 1020 "failed to recover an error on the device\n"); 1021 QETH_DBF_MESSAGE(2, "%s check on device dstat=x%x, cstat=x%x\n", 1022 dev_name(&cdev->dev), dstat, cstat); 1023 print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET, 1024 16, 1, irb, 64, 1); 1025 return 1; 1026 } 1027 1028 if (dstat & DEV_STAT_UNIT_CHECK) { 1029 if (sense[SENSE_RESETTING_EVENT_BYTE] & 1030 SENSE_RESETTING_EVENT_FLAG) { 1031 QETH_CARD_TEXT(card, 2, "REVIND"); 1032 return 1; 1033 } 1034 if (sense[SENSE_COMMAND_REJECT_BYTE] & 1035 SENSE_COMMAND_REJECT_FLAG) { 1036 QETH_CARD_TEXT(card, 2, "CMDREJi"); 1037 return 1; 1038 } 1039 if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) { 1040 QETH_CARD_TEXT(card, 2, "AFFE"); 1041 return 1; 1042 } 1043 if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) { 1044 QETH_CARD_TEXT(card, 2, "ZEROSEN"); 1045 return 0; 1046 } 1047 QETH_CARD_TEXT(card, 2, "DGENCHK"); 1048 return 1; 1049 } 1050 return 0; 1051 } 1052 1053 static long __qeth_check_irb_error(struct ccw_device *cdev, 1054 unsigned long intparm, struct irb *irb) 1055 { 1056 struct qeth_card *card; 1057 1058 card = CARD_FROM_CDEV(cdev); 1059 1060 if (!card || !IS_ERR(irb)) 1061 return 0; 1062 1063 switch (PTR_ERR(irb)) { 1064 case -EIO: 1065 QETH_DBF_MESSAGE(2, "%s i/o-error on device\n", 1066 dev_name(&cdev->dev)); 1067 QETH_CARD_TEXT(card, 2, "ckirberr"); 1068 QETH_CARD_TEXT_(card, 2, " rc%d", -EIO); 1069 break; 1070 case -ETIMEDOUT: 1071 dev_warn(&cdev->dev, "A hardware operation timed out" 1072 " on the device\n"); 1073 QETH_CARD_TEXT(card, 2, "ckirberr"); 1074 QETH_CARD_TEXT_(card, 2, " rc%d", -ETIMEDOUT); 1075 if (intparm == QETH_RCD_PARM) { 1076 if (card->data.ccwdev == cdev) { 1077 card->data.state = CH_STATE_DOWN; 1078 wake_up(&card->wait_q); 1079 } 1080 } 1081 break; 1082 default: 1083 QETH_DBF_MESSAGE(2, "%s unknown error %ld on device\n", 1084 dev_name(&cdev->dev), PTR_ERR(irb)); 1085 QETH_CARD_TEXT(card, 2, "ckirberr"); 1086 QETH_CARD_TEXT(card, 2, " rc???"); 1087 } 1088 return PTR_ERR(irb); 1089 } 1090 1091 static void qeth_irq(struct ccw_device *cdev, unsigned long intparm, 1092 struct irb *irb) 1093 { 1094 int rc; 1095 int cstat, dstat; 1096 struct qeth_cmd_buffer *buffer; 1097 struct qeth_channel *channel; 1098 struct qeth_card *card; 1099 struct qeth_cmd_buffer *iob; 1100 __u8 index; 1101 1102 if (__qeth_check_irb_error(cdev, intparm, irb)) 1103 return; 1104 cstat = irb->scsw.cmd.cstat; 1105 dstat = irb->scsw.cmd.dstat; 1106 1107 card = CARD_FROM_CDEV(cdev); 1108 if (!card) 1109 return; 1110 1111 QETH_CARD_TEXT(card, 5, "irq"); 1112 1113 if (card->read.ccwdev == cdev) { 1114 channel = &card->read; 1115 QETH_CARD_TEXT(card, 5, "read"); 1116 } else if (card->write.ccwdev == cdev) { 1117 channel = &card->write; 1118 QETH_CARD_TEXT(card, 5, "write"); 1119 } else { 1120 channel = &card->data; 1121 QETH_CARD_TEXT(card, 5, "data"); 1122 } 1123 atomic_set(&channel->irq_pending, 0); 1124 1125 if (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC)) 1126 channel->state = CH_STATE_STOPPED; 1127 1128 if (irb->scsw.cmd.fctl & (SCSW_FCTL_HALT_FUNC)) 1129 channel->state = CH_STATE_HALTED; 1130 1131 /*let's wake up immediately on data channel*/ 1132 if ((channel == &card->data) && (intparm != 0) && 1133 (intparm != QETH_RCD_PARM)) 1134 goto out; 1135 1136 if (intparm == QETH_CLEAR_CHANNEL_PARM) { 1137 QETH_CARD_TEXT(card, 6, "clrchpar"); 1138 /* we don't have to handle this further */ 1139 intparm = 0; 1140 } 1141 if (intparm == QETH_HALT_CHANNEL_PARM) { 1142 QETH_CARD_TEXT(card, 6, "hltchpar"); 1143 /* we don't have to handle this further */ 1144 intparm = 0; 1145 } 1146 if ((dstat & DEV_STAT_UNIT_EXCEP) || 1147 (dstat & DEV_STAT_UNIT_CHECK) || 1148 (cstat)) { 1149 if (irb->esw.esw0.erw.cons) { 1150 dev_warn(&channel->ccwdev->dev, 1151 "The qeth device driver failed to recover " 1152 "an error on the device\n"); 1153 QETH_DBF_MESSAGE(2, "%s sense data available. cstat " 1154 "0x%X dstat 0x%X\n", 1155 dev_name(&channel->ccwdev->dev), cstat, dstat); 1156 print_hex_dump(KERN_WARNING, "qeth: irb ", 1157 DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1); 1158 print_hex_dump(KERN_WARNING, "qeth: sense data ", 1159 DUMP_PREFIX_OFFSET, 16, 1, irb->ecw, 32, 1); 1160 } 1161 if (intparm == QETH_RCD_PARM) { 1162 channel->state = CH_STATE_DOWN; 1163 goto out; 1164 } 1165 rc = qeth_get_problem(cdev, irb); 1166 if (rc) { 1167 qeth_clear_ipacmd_list(card); 1168 qeth_schedule_recovery(card); 1169 goto out; 1170 } 1171 } 1172 1173 if (intparm == QETH_RCD_PARM) { 1174 channel->state = CH_STATE_RCD_DONE; 1175 goto out; 1176 } 1177 if (intparm) { 1178 buffer = (struct qeth_cmd_buffer *) __va((addr_t)intparm); 1179 buffer->state = BUF_STATE_PROCESSED; 1180 } 1181 if (channel == &card->data) 1182 return; 1183 if (channel == &card->read && 1184 channel->state == CH_STATE_UP) 1185 qeth_issue_next_read(card); 1186 1187 iob = channel->iob; 1188 index = channel->buf_no; 1189 while (iob[index].state == BUF_STATE_PROCESSED) { 1190 if (iob[index].callback != NULL) 1191 iob[index].callback(channel, iob + index); 1192 1193 index = (index + 1) % QETH_CMD_BUFFER_NO; 1194 } 1195 channel->buf_no = index; 1196 out: 1197 wake_up(&card->wait_q); 1198 return; 1199 } 1200 1201 static void qeth_notify_skbs(struct qeth_qdio_out_q *q, 1202 struct qeth_qdio_out_buffer *buf, 1203 enum iucv_tx_notify notification) 1204 { 1205 struct sk_buff *skb; 1206 1207 if (skb_queue_empty(&buf->skb_list)) 1208 goto out; 1209 skb = skb_peek(&buf->skb_list); 1210 while (skb) { 1211 QETH_CARD_TEXT_(q->card, 5, "skbn%d", notification); 1212 QETH_CARD_TEXT_(q->card, 5, "%lx", (long) skb); 1213 if (be16_to_cpu(skb->protocol) == ETH_P_AF_IUCV) { 1214 if (skb->sk) { 1215 struct iucv_sock *iucv = iucv_sk(skb->sk); 1216 iucv->sk_txnotify(skb, notification); 1217 } 1218 } 1219 if (skb_queue_is_last(&buf->skb_list, skb)) 1220 skb = NULL; 1221 else 1222 skb = skb_queue_next(&buf->skb_list, skb); 1223 } 1224 out: 1225 return; 1226 } 1227 1228 static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf) 1229 { 1230 struct sk_buff *skb; 1231 struct iucv_sock *iucv; 1232 int notify_general_error = 0; 1233 1234 if (atomic_read(&buf->state) == QETH_QDIO_BUF_PENDING) 1235 notify_general_error = 1; 1236 1237 /* release may never happen from within CQ tasklet scope */ 1238 WARN_ON_ONCE(atomic_read(&buf->state) == QETH_QDIO_BUF_IN_CQ); 1239 1240 skb = skb_dequeue(&buf->skb_list); 1241 while (skb) { 1242 QETH_CARD_TEXT(buf->q->card, 5, "skbr"); 1243 QETH_CARD_TEXT_(buf->q->card, 5, "%lx", (long) skb); 1244 if (notify_general_error && 1245 be16_to_cpu(skb->protocol) == ETH_P_AF_IUCV) { 1246 if (skb->sk) { 1247 iucv = iucv_sk(skb->sk); 1248 iucv->sk_txnotify(skb, TX_NOTIFY_GENERALERROR); 1249 } 1250 } 1251 refcount_dec(&skb->users); 1252 dev_kfree_skb_any(skb); 1253 skb = skb_dequeue(&buf->skb_list); 1254 } 1255 } 1256 1257 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue, 1258 struct qeth_qdio_out_buffer *buf, 1259 enum qeth_qdio_buffer_states newbufstate) 1260 { 1261 int i; 1262 1263 /* is PCI flag set on buffer? */ 1264 if (buf->buffer->element[0].sflags & SBAL_SFLAGS0_PCI_REQ) 1265 atomic_dec(&queue->set_pci_flags_count); 1266 1267 if (newbufstate == QETH_QDIO_BUF_EMPTY) { 1268 qeth_release_skbs(buf); 1269 } 1270 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(queue->card); ++i) { 1271 if (buf->buffer->element[i].addr && buf->is_header[i]) 1272 kmem_cache_free(qeth_core_header_cache, 1273 buf->buffer->element[i].addr); 1274 buf->is_header[i] = 0; 1275 buf->buffer->element[i].length = 0; 1276 buf->buffer->element[i].addr = NULL; 1277 buf->buffer->element[i].eflags = 0; 1278 buf->buffer->element[i].sflags = 0; 1279 } 1280 buf->buffer->element[15].eflags = 0; 1281 buf->buffer->element[15].sflags = 0; 1282 buf->next_element_to_fill = 0; 1283 atomic_set(&buf->state, newbufstate); 1284 } 1285 1286 static void qeth_clear_outq_buffers(struct qeth_qdio_out_q *q, int free) 1287 { 1288 int j; 1289 1290 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) { 1291 if (!q->bufs[j]) 1292 continue; 1293 qeth_cleanup_handled_pending(q, j, 1); 1294 qeth_clear_output_buffer(q, q->bufs[j], QETH_QDIO_BUF_EMPTY); 1295 if (free) { 1296 kmem_cache_free(qeth_qdio_outbuf_cache, q->bufs[j]); 1297 q->bufs[j] = NULL; 1298 } 1299 } 1300 } 1301 1302 void qeth_clear_qdio_buffers(struct qeth_card *card) 1303 { 1304 int i; 1305 1306 QETH_CARD_TEXT(card, 2, "clearqdbf"); 1307 /* clear outbound buffers to free skbs */ 1308 for (i = 0; i < card->qdio.no_out_queues; ++i) { 1309 if (card->qdio.out_qs[i]) { 1310 qeth_clear_outq_buffers(card->qdio.out_qs[i], 0); 1311 } 1312 } 1313 } 1314 EXPORT_SYMBOL_GPL(qeth_clear_qdio_buffers); 1315 1316 static void qeth_free_buffer_pool(struct qeth_card *card) 1317 { 1318 struct qeth_buffer_pool_entry *pool_entry, *tmp; 1319 int i = 0; 1320 list_for_each_entry_safe(pool_entry, tmp, 1321 &card->qdio.init_pool.entry_list, init_list){ 1322 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) 1323 free_page((unsigned long)pool_entry->elements[i]); 1324 list_del(&pool_entry->init_list); 1325 kfree(pool_entry); 1326 } 1327 } 1328 1329 static void qeth_clean_channel(struct qeth_channel *channel) 1330 { 1331 int cnt; 1332 1333 QETH_DBF_TEXT(SETUP, 2, "freech"); 1334 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) 1335 kfree(channel->iob[cnt].data); 1336 } 1337 1338 static void qeth_set_single_write_queues(struct qeth_card *card) 1339 { 1340 if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) && 1341 (card->qdio.no_out_queues == 4)) 1342 qeth_free_qdio_buffers(card); 1343 1344 card->qdio.no_out_queues = 1; 1345 if (card->qdio.default_out_queue != 0) 1346 dev_info(&card->gdev->dev, "Priority Queueing not supported\n"); 1347 1348 card->qdio.default_out_queue = 0; 1349 } 1350 1351 static void qeth_set_multiple_write_queues(struct qeth_card *card) 1352 { 1353 if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) && 1354 (card->qdio.no_out_queues == 1)) { 1355 qeth_free_qdio_buffers(card); 1356 card->qdio.default_out_queue = 2; 1357 } 1358 card->qdio.no_out_queues = 4; 1359 } 1360 1361 static void qeth_update_from_chp_desc(struct qeth_card *card) 1362 { 1363 struct ccw_device *ccwdev; 1364 struct channel_path_desc *chp_dsc; 1365 1366 QETH_DBF_TEXT(SETUP, 2, "chp_desc"); 1367 1368 ccwdev = card->data.ccwdev; 1369 chp_dsc = ccw_device_get_chp_desc(ccwdev, 0); 1370 if (!chp_dsc) 1371 goto out; 1372 1373 card->info.func_level = 0x4100 + chp_dsc->desc; 1374 if (card->info.type == QETH_CARD_TYPE_IQD) 1375 goto out; 1376 1377 /* CHPP field bit 6 == 1 -> single queue */ 1378 if ((chp_dsc->chpp & 0x02) == 0x02) 1379 qeth_set_single_write_queues(card); 1380 else 1381 qeth_set_multiple_write_queues(card); 1382 out: 1383 kfree(chp_dsc); 1384 QETH_DBF_TEXT_(SETUP, 2, "nr:%x", card->qdio.no_out_queues); 1385 QETH_DBF_TEXT_(SETUP, 2, "lvl:%02x", card->info.func_level); 1386 } 1387 1388 static void qeth_init_qdio_info(struct qeth_card *card) 1389 { 1390 QETH_DBF_TEXT(SETUP, 4, "intqdinf"); 1391 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED); 1392 /* inbound */ 1393 card->qdio.no_in_queues = 1; 1394 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT; 1395 if (card->info.type == QETH_CARD_TYPE_IQD) 1396 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_HSDEFAULT; 1397 else 1398 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT; 1399 card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count; 1400 INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list); 1401 INIT_LIST_HEAD(&card->qdio.init_pool.entry_list); 1402 } 1403 1404 static void qeth_set_intial_options(struct qeth_card *card) 1405 { 1406 card->options.route4.type = NO_ROUTER; 1407 card->options.route6.type = NO_ROUTER; 1408 card->options.fake_broadcast = 0; 1409 card->options.performance_stats = 0; 1410 card->options.rx_sg_cb = QETH_RX_SG_CB; 1411 card->options.isolation = ISOLATION_MODE_NONE; 1412 card->options.cq = QETH_CQ_DISABLED; 1413 } 1414 1415 static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread) 1416 { 1417 unsigned long flags; 1418 int rc = 0; 1419 1420 spin_lock_irqsave(&card->thread_mask_lock, flags); 1421 QETH_CARD_TEXT_(card, 4, " %02x%02x%02x", 1422 (u8) card->thread_start_mask, 1423 (u8) card->thread_allowed_mask, 1424 (u8) card->thread_running_mask); 1425 rc = (card->thread_start_mask & thread); 1426 spin_unlock_irqrestore(&card->thread_mask_lock, flags); 1427 return rc; 1428 } 1429 1430 static void qeth_start_kernel_thread(struct work_struct *work) 1431 { 1432 struct task_struct *ts; 1433 struct qeth_card *card = container_of(work, struct qeth_card, 1434 kernel_thread_starter); 1435 QETH_CARD_TEXT(card , 2, "strthrd"); 1436 1437 if (card->read.state != CH_STATE_UP && 1438 card->write.state != CH_STATE_UP) 1439 return; 1440 if (qeth_do_start_thread(card, QETH_RECOVER_THREAD)) { 1441 ts = kthread_run(card->discipline->recover, (void *)card, 1442 "qeth_recover"); 1443 if (IS_ERR(ts)) { 1444 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD); 1445 qeth_clear_thread_running_bit(card, 1446 QETH_RECOVER_THREAD); 1447 } 1448 } 1449 } 1450 1451 static void qeth_buffer_reclaim_work(struct work_struct *); 1452 static int qeth_setup_card(struct qeth_card *card) 1453 { 1454 1455 QETH_DBF_TEXT(SETUP, 2, "setupcrd"); 1456 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 1457 1458 card->read.state = CH_STATE_DOWN; 1459 card->write.state = CH_STATE_DOWN; 1460 card->data.state = CH_STATE_DOWN; 1461 card->state = CARD_STATE_DOWN; 1462 card->lan_online = 0; 1463 card->read_or_write_problem = 0; 1464 card->dev = NULL; 1465 spin_lock_init(&card->vlanlock); 1466 spin_lock_init(&card->mclock); 1467 spin_lock_init(&card->lock); 1468 spin_lock_init(&card->ip_lock); 1469 spin_lock_init(&card->thread_mask_lock); 1470 mutex_init(&card->conf_mutex); 1471 mutex_init(&card->discipline_mutex); 1472 card->thread_start_mask = 0; 1473 card->thread_allowed_mask = 0; 1474 card->thread_running_mask = 0; 1475 INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread); 1476 INIT_LIST_HEAD(&card->cmd_waiter_list); 1477 init_waitqueue_head(&card->wait_q); 1478 /* initial options */ 1479 qeth_set_intial_options(card); 1480 /* IP address takeover */ 1481 INIT_LIST_HEAD(&card->ipato.entries); 1482 card->ipato.enabled = false; 1483 card->ipato.invert4 = false; 1484 card->ipato.invert6 = false; 1485 /* init QDIO stuff */ 1486 qeth_init_qdio_info(card); 1487 INIT_DELAYED_WORK(&card->buffer_reclaim_work, qeth_buffer_reclaim_work); 1488 INIT_WORK(&card->close_dev_work, qeth_close_dev_handler); 1489 return 0; 1490 } 1491 1492 static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr) 1493 { 1494 struct qeth_card *card = container_of(slr, struct qeth_card, 1495 qeth_service_level); 1496 if (card->info.mcl_level[0]) 1497 seq_printf(m, "qeth: %s firmware level %s\n", 1498 CARD_BUS_ID(card), card->info.mcl_level); 1499 } 1500 1501 static struct qeth_card *qeth_alloc_card(void) 1502 { 1503 struct qeth_card *card; 1504 1505 QETH_DBF_TEXT(SETUP, 2, "alloccrd"); 1506 card = kzalloc(sizeof(struct qeth_card), GFP_DMA|GFP_KERNEL); 1507 if (!card) 1508 goto out; 1509 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 1510 if (qeth_setup_channel(&card->read)) 1511 goto out_ip; 1512 if (qeth_setup_channel(&card->write)) 1513 goto out_channel; 1514 card->options.layer2 = -1; 1515 card->qeth_service_level.seq_print = qeth_core_sl_print; 1516 register_service_level(&card->qeth_service_level); 1517 return card; 1518 1519 out_channel: 1520 qeth_clean_channel(&card->read); 1521 out_ip: 1522 kfree(card); 1523 out: 1524 return NULL; 1525 } 1526 1527 static void qeth_determine_card_type(struct qeth_card *card) 1528 { 1529 QETH_DBF_TEXT(SETUP, 2, "detcdtyp"); 1530 1531 card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT; 1532 card->qdio.default_out_queue = QETH_DEFAULT_QUEUE; 1533 card->info.type = CARD_RDEV(card)->id.driver_info; 1534 card->qdio.no_out_queues = QETH_MAX_QUEUES; 1535 if (card->info.type == QETH_CARD_TYPE_IQD) 1536 card->info.is_multicast_different = 0x0103; 1537 qeth_update_from_chp_desc(card); 1538 } 1539 1540 static int qeth_clear_channel(struct qeth_channel *channel) 1541 { 1542 unsigned long flags; 1543 struct qeth_card *card; 1544 int rc; 1545 1546 card = CARD_FROM_CDEV(channel->ccwdev); 1547 QETH_CARD_TEXT(card, 3, "clearch"); 1548 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags); 1549 rc = ccw_device_clear(channel->ccwdev, QETH_CLEAR_CHANNEL_PARM); 1550 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags); 1551 1552 if (rc) 1553 return rc; 1554 rc = wait_event_interruptible_timeout(card->wait_q, 1555 channel->state == CH_STATE_STOPPED, QETH_TIMEOUT); 1556 if (rc == -ERESTARTSYS) 1557 return rc; 1558 if (channel->state != CH_STATE_STOPPED) 1559 return -ETIME; 1560 channel->state = CH_STATE_DOWN; 1561 return 0; 1562 } 1563 1564 static int qeth_halt_channel(struct qeth_channel *channel) 1565 { 1566 unsigned long flags; 1567 struct qeth_card *card; 1568 int rc; 1569 1570 card = CARD_FROM_CDEV(channel->ccwdev); 1571 QETH_CARD_TEXT(card, 3, "haltch"); 1572 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags); 1573 rc = ccw_device_halt(channel->ccwdev, QETH_HALT_CHANNEL_PARM); 1574 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags); 1575 1576 if (rc) 1577 return rc; 1578 rc = wait_event_interruptible_timeout(card->wait_q, 1579 channel->state == CH_STATE_HALTED, QETH_TIMEOUT); 1580 if (rc == -ERESTARTSYS) 1581 return rc; 1582 if (channel->state != CH_STATE_HALTED) 1583 return -ETIME; 1584 return 0; 1585 } 1586 1587 static int qeth_halt_channels(struct qeth_card *card) 1588 { 1589 int rc1 = 0, rc2 = 0, rc3 = 0; 1590 1591 QETH_CARD_TEXT(card, 3, "haltchs"); 1592 rc1 = qeth_halt_channel(&card->read); 1593 rc2 = qeth_halt_channel(&card->write); 1594 rc3 = qeth_halt_channel(&card->data); 1595 if (rc1) 1596 return rc1; 1597 if (rc2) 1598 return rc2; 1599 return rc3; 1600 } 1601 1602 static int qeth_clear_channels(struct qeth_card *card) 1603 { 1604 int rc1 = 0, rc2 = 0, rc3 = 0; 1605 1606 QETH_CARD_TEXT(card, 3, "clearchs"); 1607 rc1 = qeth_clear_channel(&card->read); 1608 rc2 = qeth_clear_channel(&card->write); 1609 rc3 = qeth_clear_channel(&card->data); 1610 if (rc1) 1611 return rc1; 1612 if (rc2) 1613 return rc2; 1614 return rc3; 1615 } 1616 1617 static int qeth_clear_halt_card(struct qeth_card *card, int halt) 1618 { 1619 int rc = 0; 1620 1621 QETH_CARD_TEXT(card, 3, "clhacrd"); 1622 1623 if (halt) 1624 rc = qeth_halt_channels(card); 1625 if (rc) 1626 return rc; 1627 return qeth_clear_channels(card); 1628 } 1629 1630 int qeth_qdio_clear_card(struct qeth_card *card, int use_halt) 1631 { 1632 int rc = 0; 1633 1634 QETH_CARD_TEXT(card, 3, "qdioclr"); 1635 switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED, 1636 QETH_QDIO_CLEANING)) { 1637 case QETH_QDIO_ESTABLISHED: 1638 if (card->info.type == QETH_CARD_TYPE_IQD) 1639 rc = qdio_shutdown(CARD_DDEV(card), 1640 QDIO_FLAG_CLEANUP_USING_HALT); 1641 else 1642 rc = qdio_shutdown(CARD_DDEV(card), 1643 QDIO_FLAG_CLEANUP_USING_CLEAR); 1644 if (rc) 1645 QETH_CARD_TEXT_(card, 3, "1err%d", rc); 1646 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED); 1647 break; 1648 case QETH_QDIO_CLEANING: 1649 return rc; 1650 default: 1651 break; 1652 } 1653 rc = qeth_clear_halt_card(card, use_halt); 1654 if (rc) 1655 QETH_CARD_TEXT_(card, 3, "2err%d", rc); 1656 card->state = CARD_STATE_DOWN; 1657 return rc; 1658 } 1659 EXPORT_SYMBOL_GPL(qeth_qdio_clear_card); 1660 1661 static int qeth_read_conf_data(struct qeth_card *card, void **buffer, 1662 int *length) 1663 { 1664 struct ciw *ciw; 1665 char *rcd_buf; 1666 int ret; 1667 struct qeth_channel *channel = &card->data; 1668 unsigned long flags; 1669 1670 /* 1671 * scan for RCD command in extended SenseID data 1672 */ 1673 ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD); 1674 if (!ciw || ciw->cmd == 0) 1675 return -EOPNOTSUPP; 1676 rcd_buf = kzalloc(ciw->count, GFP_KERNEL | GFP_DMA); 1677 if (!rcd_buf) 1678 return -ENOMEM; 1679 1680 channel->ccw.cmd_code = ciw->cmd; 1681 channel->ccw.cda = (__u32) __pa(rcd_buf); 1682 channel->ccw.count = ciw->count; 1683 channel->ccw.flags = CCW_FLAG_SLI; 1684 channel->state = CH_STATE_RCD; 1685 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags); 1686 ret = ccw_device_start_timeout(channel->ccwdev, &channel->ccw, 1687 QETH_RCD_PARM, LPM_ANYPATH, 0, 1688 QETH_RCD_TIMEOUT); 1689 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags); 1690 if (!ret) 1691 wait_event(card->wait_q, 1692 (channel->state == CH_STATE_RCD_DONE || 1693 channel->state == CH_STATE_DOWN)); 1694 if (channel->state == CH_STATE_DOWN) 1695 ret = -EIO; 1696 else 1697 channel->state = CH_STATE_DOWN; 1698 if (ret) { 1699 kfree(rcd_buf); 1700 *buffer = NULL; 1701 *length = 0; 1702 } else { 1703 *length = ciw->count; 1704 *buffer = rcd_buf; 1705 } 1706 return ret; 1707 } 1708 1709 static void qeth_configure_unitaddr(struct qeth_card *card, char *prcd) 1710 { 1711 QETH_DBF_TEXT(SETUP, 2, "cfgunit"); 1712 card->info.chpid = prcd[30]; 1713 card->info.unit_addr2 = prcd[31]; 1714 card->info.cula = prcd[63]; 1715 card->info.guestlan = ((prcd[0x10] == _ascebc['V']) && 1716 (prcd[0x11] == _ascebc['M'])); 1717 } 1718 1719 static enum qeth_discipline_id qeth_vm_detect_layer(struct qeth_card *card) 1720 { 1721 enum qeth_discipline_id disc = QETH_DISCIPLINE_UNDETERMINED; 1722 struct diag26c_vnic_resp *response = NULL; 1723 struct diag26c_vnic_req *request = NULL; 1724 struct ccw_dev_id id; 1725 char userid[80]; 1726 int rc = 0; 1727 1728 QETH_DBF_TEXT(SETUP, 2, "vmlayer"); 1729 1730 cpcmd("QUERY USERID", userid, sizeof(userid), &rc); 1731 if (rc) 1732 goto out; 1733 1734 request = kzalloc(sizeof(*request), GFP_KERNEL | GFP_DMA); 1735 response = kzalloc(sizeof(*response), GFP_KERNEL | GFP_DMA); 1736 if (!request || !response) { 1737 rc = -ENOMEM; 1738 goto out; 1739 } 1740 1741 ccw_device_get_id(CARD_RDEV(card), &id); 1742 request->resp_buf_len = sizeof(*response); 1743 request->resp_version = DIAG26C_VERSION6_VM65918; 1744 request->req_format = DIAG26C_VNIC_INFO; 1745 ASCEBC(userid, 8); 1746 memcpy(&request->sys_name, userid, 8); 1747 request->devno = id.devno; 1748 1749 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request)); 1750 rc = diag26c(request, response, DIAG26C_PORT_VNIC); 1751 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request)); 1752 if (rc) 1753 goto out; 1754 QETH_DBF_HEX(CTRL, 2, response, sizeof(*response)); 1755 1756 if (request->resp_buf_len < sizeof(*response) || 1757 response->version != request->resp_version) { 1758 rc = -EIO; 1759 goto out; 1760 } 1761 1762 if (response->protocol == VNIC_INFO_PROT_L2) 1763 disc = QETH_DISCIPLINE_LAYER2; 1764 else if (response->protocol == VNIC_INFO_PROT_L3) 1765 disc = QETH_DISCIPLINE_LAYER3; 1766 1767 out: 1768 kfree(response); 1769 kfree(request); 1770 if (rc) 1771 QETH_DBF_TEXT_(SETUP, 2, "err%x", rc); 1772 return disc; 1773 } 1774 1775 /* Determine whether the device requires a specific layer discipline */ 1776 static enum qeth_discipline_id qeth_enforce_discipline(struct qeth_card *card) 1777 { 1778 enum qeth_discipline_id disc = QETH_DISCIPLINE_UNDETERMINED; 1779 1780 if (card->info.type == QETH_CARD_TYPE_OSM || 1781 card->info.type == QETH_CARD_TYPE_OSN) 1782 disc = QETH_DISCIPLINE_LAYER2; 1783 else if (card->info.guestlan) 1784 disc = (card->info.type == QETH_CARD_TYPE_IQD) ? 1785 QETH_DISCIPLINE_LAYER3 : 1786 qeth_vm_detect_layer(card); 1787 1788 switch (disc) { 1789 case QETH_DISCIPLINE_LAYER2: 1790 QETH_DBF_TEXT(SETUP, 3, "force l2"); 1791 break; 1792 case QETH_DISCIPLINE_LAYER3: 1793 QETH_DBF_TEXT(SETUP, 3, "force l3"); 1794 break; 1795 default: 1796 QETH_DBF_TEXT(SETUP, 3, "force no"); 1797 } 1798 1799 return disc; 1800 } 1801 1802 static void qeth_configure_blkt_default(struct qeth_card *card, char *prcd) 1803 { 1804 QETH_DBF_TEXT(SETUP, 2, "cfgblkt"); 1805 1806 if (prcd[74] == 0xF0 && prcd[75] == 0xF0 && 1807 prcd[76] >= 0xF1 && prcd[76] <= 0xF4) { 1808 card->info.blkt.time_total = 0; 1809 card->info.blkt.inter_packet = 0; 1810 card->info.blkt.inter_packet_jumbo = 0; 1811 } else { 1812 card->info.blkt.time_total = 250; 1813 card->info.blkt.inter_packet = 5; 1814 card->info.blkt.inter_packet_jumbo = 15; 1815 } 1816 } 1817 1818 static void qeth_init_tokens(struct qeth_card *card) 1819 { 1820 card->token.issuer_rm_w = 0x00010103UL; 1821 card->token.cm_filter_w = 0x00010108UL; 1822 card->token.cm_connection_w = 0x0001010aUL; 1823 card->token.ulp_filter_w = 0x0001010bUL; 1824 card->token.ulp_connection_w = 0x0001010dUL; 1825 } 1826 1827 static void qeth_init_func_level(struct qeth_card *card) 1828 { 1829 switch (card->info.type) { 1830 case QETH_CARD_TYPE_IQD: 1831 card->info.func_level = QETH_IDX_FUNC_LEVEL_IQD; 1832 break; 1833 case QETH_CARD_TYPE_OSD: 1834 case QETH_CARD_TYPE_OSN: 1835 card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD; 1836 break; 1837 default: 1838 break; 1839 } 1840 } 1841 1842 static int qeth_idx_activate_get_answer(struct qeth_channel *channel, 1843 void (*idx_reply_cb)(struct qeth_channel *, 1844 struct qeth_cmd_buffer *)) 1845 { 1846 struct qeth_cmd_buffer *iob; 1847 unsigned long flags; 1848 int rc; 1849 struct qeth_card *card; 1850 1851 QETH_DBF_TEXT(SETUP, 2, "idxanswr"); 1852 card = CARD_FROM_CDEV(channel->ccwdev); 1853 iob = qeth_get_buffer(channel); 1854 if (!iob) 1855 return -ENOMEM; 1856 iob->callback = idx_reply_cb; 1857 memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1)); 1858 channel->ccw.count = QETH_BUFSIZE; 1859 channel->ccw.cda = (__u32) __pa(iob->data); 1860 1861 wait_event(card->wait_q, 1862 atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0); 1863 QETH_DBF_TEXT(SETUP, 6, "noirqpnd"); 1864 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags); 1865 rc = ccw_device_start(channel->ccwdev, 1866 &channel->ccw, (addr_t) iob, 0, 0); 1867 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags); 1868 1869 if (rc) { 1870 QETH_DBF_MESSAGE(2, "Error2 in activating channel rc=%d\n", rc); 1871 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc); 1872 atomic_set(&channel->irq_pending, 0); 1873 wake_up(&card->wait_q); 1874 return rc; 1875 } 1876 rc = wait_event_interruptible_timeout(card->wait_q, 1877 channel->state == CH_STATE_UP, QETH_TIMEOUT); 1878 if (rc == -ERESTARTSYS) 1879 return rc; 1880 if (channel->state != CH_STATE_UP) { 1881 rc = -ETIME; 1882 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc); 1883 qeth_clear_cmd_buffers(channel); 1884 } else 1885 rc = 0; 1886 return rc; 1887 } 1888 1889 static int qeth_idx_activate_channel(struct qeth_channel *channel, 1890 void (*idx_reply_cb)(struct qeth_channel *, 1891 struct qeth_cmd_buffer *)) 1892 { 1893 struct qeth_card *card; 1894 struct qeth_cmd_buffer *iob; 1895 unsigned long flags; 1896 __u16 temp; 1897 __u8 tmp; 1898 int rc; 1899 struct ccw_dev_id temp_devid; 1900 1901 card = CARD_FROM_CDEV(channel->ccwdev); 1902 1903 QETH_DBF_TEXT(SETUP, 2, "idxactch"); 1904 1905 iob = qeth_get_buffer(channel); 1906 if (!iob) 1907 return -ENOMEM; 1908 iob->callback = idx_reply_cb; 1909 memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1)); 1910 channel->ccw.count = IDX_ACTIVATE_SIZE; 1911 channel->ccw.cda = (__u32) __pa(iob->data); 1912 if (channel == &card->write) { 1913 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE); 1914 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data), 1915 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH); 1916 card->seqno.trans_hdr++; 1917 } else { 1918 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE); 1919 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data), 1920 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH); 1921 } 1922 tmp = ((__u8)card->info.portno) | 0x80; 1923 memcpy(QETH_IDX_ACT_PNO(iob->data), &tmp, 1); 1924 memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data), 1925 &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH); 1926 memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data), 1927 &card->info.func_level, sizeof(__u16)); 1928 ccw_device_get_id(CARD_DDEV(card), &temp_devid); 1929 memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &temp_devid.devno, 2); 1930 temp = (card->info.cula << 8) + card->info.unit_addr2; 1931 memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &temp, 2); 1932 1933 wait_event(card->wait_q, 1934 atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0); 1935 QETH_DBF_TEXT(SETUP, 6, "noirqpnd"); 1936 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags); 1937 rc = ccw_device_start(channel->ccwdev, 1938 &channel->ccw, (addr_t) iob, 0, 0); 1939 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags); 1940 1941 if (rc) { 1942 QETH_DBF_MESSAGE(2, "Error1 in activating channel. rc=%d\n", 1943 rc); 1944 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 1945 atomic_set(&channel->irq_pending, 0); 1946 wake_up(&card->wait_q); 1947 return rc; 1948 } 1949 rc = wait_event_interruptible_timeout(card->wait_q, 1950 channel->state == CH_STATE_ACTIVATING, QETH_TIMEOUT); 1951 if (rc == -ERESTARTSYS) 1952 return rc; 1953 if (channel->state != CH_STATE_ACTIVATING) { 1954 dev_warn(&channel->ccwdev->dev, "The qeth device driver" 1955 " failed to recover an error on the device\n"); 1956 QETH_DBF_MESSAGE(2, "%s IDX activate timed out\n", 1957 dev_name(&channel->ccwdev->dev)); 1958 QETH_DBF_TEXT_(SETUP, 2, "2err%d", -ETIME); 1959 qeth_clear_cmd_buffers(channel); 1960 return -ETIME; 1961 } 1962 return qeth_idx_activate_get_answer(channel, idx_reply_cb); 1963 } 1964 1965 static int qeth_peer_func_level(int level) 1966 { 1967 if ((level & 0xff) == 8) 1968 return (level & 0xff) + 0x400; 1969 if (((level >> 8) & 3) == 1) 1970 return (level & 0xff) + 0x200; 1971 return level; 1972 } 1973 1974 static void qeth_idx_write_cb(struct qeth_channel *channel, 1975 struct qeth_cmd_buffer *iob) 1976 { 1977 struct qeth_card *card; 1978 __u16 temp; 1979 1980 QETH_DBF_TEXT(SETUP , 2, "idxwrcb"); 1981 1982 if (channel->state == CH_STATE_DOWN) { 1983 channel->state = CH_STATE_ACTIVATING; 1984 goto out; 1985 } 1986 card = CARD_FROM_CDEV(channel->ccwdev); 1987 1988 if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) { 1989 if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == QETH_IDX_ACT_ERR_EXCL) 1990 dev_err(&card->write.ccwdev->dev, 1991 "The adapter is used exclusively by another " 1992 "host\n"); 1993 else 1994 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel:" 1995 " negative reply\n", 1996 dev_name(&card->write.ccwdev->dev)); 1997 goto out; 1998 } 1999 memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2); 2000 if ((temp & ~0x0100) != qeth_peer_func_level(card->info.func_level)) { 2001 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel: " 2002 "function level mismatch (sent: 0x%x, received: " 2003 "0x%x)\n", dev_name(&card->write.ccwdev->dev), 2004 card->info.func_level, temp); 2005 goto out; 2006 } 2007 channel->state = CH_STATE_UP; 2008 out: 2009 qeth_release_buffer(channel, iob); 2010 } 2011 2012 static void qeth_idx_read_cb(struct qeth_channel *channel, 2013 struct qeth_cmd_buffer *iob) 2014 { 2015 struct qeth_card *card; 2016 __u16 temp; 2017 2018 QETH_DBF_TEXT(SETUP , 2, "idxrdcb"); 2019 if (channel->state == CH_STATE_DOWN) { 2020 channel->state = CH_STATE_ACTIVATING; 2021 goto out; 2022 } 2023 2024 card = CARD_FROM_CDEV(channel->ccwdev); 2025 if (qeth_check_idx_response(card, iob->data)) 2026 goto out; 2027 2028 if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) { 2029 switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) { 2030 case QETH_IDX_ACT_ERR_EXCL: 2031 dev_err(&card->write.ccwdev->dev, 2032 "The adapter is used exclusively by another " 2033 "host\n"); 2034 break; 2035 case QETH_IDX_ACT_ERR_AUTH: 2036 case QETH_IDX_ACT_ERR_AUTH_USER: 2037 dev_err(&card->read.ccwdev->dev, 2038 "Setting the device online failed because of " 2039 "insufficient authorization\n"); 2040 break; 2041 default: 2042 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel:" 2043 " negative reply\n", 2044 dev_name(&card->read.ccwdev->dev)); 2045 } 2046 QETH_CARD_TEXT_(card, 2, "idxread%c", 2047 QETH_IDX_ACT_CAUSE_CODE(iob->data)); 2048 goto out; 2049 } 2050 2051 memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2); 2052 if (temp != qeth_peer_func_level(card->info.func_level)) { 2053 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel: function " 2054 "level mismatch (sent: 0x%x, received: 0x%x)\n", 2055 dev_name(&card->read.ccwdev->dev), 2056 card->info.func_level, temp); 2057 goto out; 2058 } 2059 memcpy(&card->token.issuer_rm_r, 2060 QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data), 2061 QETH_MPC_TOKEN_LENGTH); 2062 memcpy(&card->info.mcl_level[0], 2063 QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH); 2064 channel->state = CH_STATE_UP; 2065 out: 2066 qeth_release_buffer(channel, iob); 2067 } 2068 2069 void qeth_prepare_control_data(struct qeth_card *card, int len, 2070 struct qeth_cmd_buffer *iob) 2071 { 2072 qeth_setup_ccw(&card->write, iob->data, len); 2073 iob->callback = qeth_release_buffer; 2074 2075 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data), 2076 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH); 2077 card->seqno.trans_hdr++; 2078 memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data), 2079 &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH); 2080 card->seqno.pdu_hdr++; 2081 memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data), 2082 &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH); 2083 QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN); 2084 } 2085 EXPORT_SYMBOL_GPL(qeth_prepare_control_data); 2086 2087 /** 2088 * qeth_send_control_data() - send control command to the card 2089 * @card: qeth_card structure pointer 2090 * @len: size of the command buffer 2091 * @iob: qeth_cmd_buffer pointer 2092 * @reply_cb: callback function pointer 2093 * @cb_card: pointer to the qeth_card structure 2094 * @cb_reply: pointer to the qeth_reply structure 2095 * @cb_cmd: pointer to the original iob for non-IPA 2096 * commands, or to the qeth_ipa_cmd structure 2097 * for the IPA commands. 2098 * @reply_param: private pointer passed to the callback 2099 * 2100 * Returns the value of the `return_code' field of the response 2101 * block returned from the hardware, or other error indication. 2102 * Value of zero indicates successful execution of the command. 2103 * 2104 * Callback function gets called one or more times, with cb_cmd 2105 * pointing to the response returned by the hardware. Callback 2106 * function must return non-zero if more reply blocks are expected, 2107 * and zero if the last or only reply block is received. Callback 2108 * function can get the value of the reply_param pointer from the 2109 * field 'param' of the structure qeth_reply. 2110 */ 2111 2112 int qeth_send_control_data(struct qeth_card *card, int len, 2113 struct qeth_cmd_buffer *iob, 2114 int (*reply_cb)(struct qeth_card *cb_card, 2115 struct qeth_reply *cb_reply, 2116 unsigned long cb_cmd), 2117 void *reply_param) 2118 { 2119 int rc; 2120 unsigned long flags; 2121 struct qeth_reply *reply = NULL; 2122 unsigned long timeout, event_timeout; 2123 struct qeth_ipa_cmd *cmd = NULL; 2124 2125 QETH_CARD_TEXT(card, 2, "sendctl"); 2126 2127 if (card->read_or_write_problem) { 2128 qeth_release_buffer(iob->channel, iob); 2129 return -EIO; 2130 } 2131 reply = qeth_alloc_reply(card); 2132 if (!reply) { 2133 return -ENOMEM; 2134 } 2135 reply->callback = reply_cb; 2136 reply->param = reply_param; 2137 2138 init_waitqueue_head(&reply->wait_q); 2139 2140 while (atomic_cmpxchg(&card->write.irq_pending, 0, 1)) ; 2141 2142 if (IS_IPA(iob->data)) { 2143 cmd = __ipa_cmd(iob); 2144 cmd->hdr.seqno = card->seqno.ipa++; 2145 reply->seqno = cmd->hdr.seqno; 2146 event_timeout = QETH_IPA_TIMEOUT; 2147 } else { 2148 reply->seqno = QETH_IDX_COMMAND_SEQNO; 2149 event_timeout = QETH_TIMEOUT; 2150 } 2151 qeth_prepare_control_data(card, len, iob); 2152 2153 spin_lock_irqsave(&card->lock, flags); 2154 list_add_tail(&reply->list, &card->cmd_waiter_list); 2155 spin_unlock_irqrestore(&card->lock, flags); 2156 2157 timeout = jiffies + event_timeout; 2158 2159 QETH_CARD_TEXT(card, 6, "noirqpnd"); 2160 spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags); 2161 rc = ccw_device_start(card->write.ccwdev, &card->write.ccw, 2162 (addr_t) iob, 0, 0); 2163 spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags); 2164 if (rc) { 2165 QETH_DBF_MESSAGE(2, "%s qeth_send_control_data: " 2166 "ccw_device_start rc = %i\n", 2167 dev_name(&card->write.ccwdev->dev), rc); 2168 QETH_CARD_TEXT_(card, 2, " err%d", rc); 2169 spin_lock_irqsave(&card->lock, flags); 2170 list_del_init(&reply->list); 2171 qeth_put_reply(reply); 2172 spin_unlock_irqrestore(&card->lock, flags); 2173 qeth_release_buffer(iob->channel, iob); 2174 atomic_set(&card->write.irq_pending, 0); 2175 wake_up(&card->wait_q); 2176 return rc; 2177 } 2178 2179 /* we have only one long running ipassist, since we can ensure 2180 process context of this command we can sleep */ 2181 if (cmd && cmd->hdr.command == IPA_CMD_SETIP && 2182 cmd->hdr.prot_version == QETH_PROT_IPV4) { 2183 if (!wait_event_timeout(reply->wait_q, 2184 atomic_read(&reply->received), event_timeout)) 2185 goto time_err; 2186 } else { 2187 while (!atomic_read(&reply->received)) { 2188 if (time_after(jiffies, timeout)) 2189 goto time_err; 2190 cpu_relax(); 2191 } 2192 } 2193 2194 if (reply->rc == -EIO) 2195 goto error; 2196 rc = reply->rc; 2197 qeth_put_reply(reply); 2198 return rc; 2199 2200 time_err: 2201 reply->rc = -ETIME; 2202 spin_lock_irqsave(&reply->card->lock, flags); 2203 list_del_init(&reply->list); 2204 spin_unlock_irqrestore(&reply->card->lock, flags); 2205 atomic_inc(&reply->received); 2206 error: 2207 atomic_set(&card->write.irq_pending, 0); 2208 qeth_release_buffer(iob->channel, iob); 2209 card->write.buf_no = (card->write.buf_no + 1) % QETH_CMD_BUFFER_NO; 2210 rc = reply->rc; 2211 qeth_put_reply(reply); 2212 return rc; 2213 } 2214 EXPORT_SYMBOL_GPL(qeth_send_control_data); 2215 2216 static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply, 2217 unsigned long data) 2218 { 2219 struct qeth_cmd_buffer *iob; 2220 2221 QETH_DBF_TEXT(SETUP, 2, "cmenblcb"); 2222 2223 iob = (struct qeth_cmd_buffer *) data; 2224 memcpy(&card->token.cm_filter_r, 2225 QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data), 2226 QETH_MPC_TOKEN_LENGTH); 2227 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc); 2228 return 0; 2229 } 2230 2231 static int qeth_cm_enable(struct qeth_card *card) 2232 { 2233 int rc; 2234 struct qeth_cmd_buffer *iob; 2235 2236 QETH_DBF_TEXT(SETUP, 2, "cmenable"); 2237 2238 iob = qeth_wait_for_buffer(&card->write); 2239 memcpy(iob->data, CM_ENABLE, CM_ENABLE_SIZE); 2240 memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data), 2241 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH); 2242 memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data), 2243 &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH); 2244 2245 rc = qeth_send_control_data(card, CM_ENABLE_SIZE, iob, 2246 qeth_cm_enable_cb, NULL); 2247 return rc; 2248 } 2249 2250 static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply, 2251 unsigned long data) 2252 { 2253 2254 struct qeth_cmd_buffer *iob; 2255 2256 QETH_DBF_TEXT(SETUP, 2, "cmsetpcb"); 2257 2258 iob = (struct qeth_cmd_buffer *) data; 2259 memcpy(&card->token.cm_connection_r, 2260 QETH_CM_SETUP_RESP_DEST_ADDR(iob->data), 2261 QETH_MPC_TOKEN_LENGTH); 2262 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc); 2263 return 0; 2264 } 2265 2266 static int qeth_cm_setup(struct qeth_card *card) 2267 { 2268 int rc; 2269 struct qeth_cmd_buffer *iob; 2270 2271 QETH_DBF_TEXT(SETUP, 2, "cmsetup"); 2272 2273 iob = qeth_wait_for_buffer(&card->write); 2274 memcpy(iob->data, CM_SETUP, CM_SETUP_SIZE); 2275 memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data), 2276 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH); 2277 memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data), 2278 &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH); 2279 memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data), 2280 &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH); 2281 rc = qeth_send_control_data(card, CM_SETUP_SIZE, iob, 2282 qeth_cm_setup_cb, NULL); 2283 return rc; 2284 2285 } 2286 2287 static int qeth_get_initial_mtu_for_card(struct qeth_card *card) 2288 { 2289 switch (card->info.type) { 2290 case QETH_CARD_TYPE_IQD: 2291 return card->info.max_mtu; 2292 case QETH_CARD_TYPE_OSD: 2293 case QETH_CARD_TYPE_OSX: 2294 if (!card->options.layer2) 2295 return ETH_DATA_LEN - 8; /* L3: allow for LLC + SNAP */ 2296 /* fall through */ 2297 default: 2298 return ETH_DATA_LEN; 2299 } 2300 } 2301 2302 static int qeth_get_mtu_outof_framesize(int framesize) 2303 { 2304 switch (framesize) { 2305 case 0x4000: 2306 return 8192; 2307 case 0x6000: 2308 return 16384; 2309 case 0xa000: 2310 return 32768; 2311 case 0xffff: 2312 return 57344; 2313 default: 2314 return 0; 2315 } 2316 } 2317 2318 static int qeth_mtu_is_valid(struct qeth_card *card, int mtu) 2319 { 2320 switch (card->info.type) { 2321 case QETH_CARD_TYPE_OSD: 2322 case QETH_CARD_TYPE_OSM: 2323 case QETH_CARD_TYPE_OSX: 2324 case QETH_CARD_TYPE_IQD: 2325 return ((mtu >= 576) && 2326 (mtu <= card->info.max_mtu)); 2327 case QETH_CARD_TYPE_OSN: 2328 default: 2329 return 1; 2330 } 2331 } 2332 2333 static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply, 2334 unsigned long data) 2335 { 2336 2337 __u16 mtu, framesize; 2338 __u16 len; 2339 __u8 link_type; 2340 struct qeth_cmd_buffer *iob; 2341 2342 QETH_DBF_TEXT(SETUP, 2, "ulpenacb"); 2343 2344 iob = (struct qeth_cmd_buffer *) data; 2345 memcpy(&card->token.ulp_filter_r, 2346 QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data), 2347 QETH_MPC_TOKEN_LENGTH); 2348 if (card->info.type == QETH_CARD_TYPE_IQD) { 2349 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2); 2350 mtu = qeth_get_mtu_outof_framesize(framesize); 2351 if (!mtu) { 2352 iob->rc = -EINVAL; 2353 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc); 2354 return 0; 2355 } 2356 if (card->info.initial_mtu && (card->info.initial_mtu != mtu)) { 2357 /* frame size has changed */ 2358 if (card->dev && 2359 ((card->dev->mtu == card->info.initial_mtu) || 2360 (card->dev->mtu > mtu))) 2361 card->dev->mtu = mtu; 2362 qeth_free_qdio_buffers(card); 2363 } 2364 card->info.initial_mtu = mtu; 2365 card->info.max_mtu = mtu; 2366 card->qdio.in_buf_size = mtu + 2 * PAGE_SIZE; 2367 } else { 2368 card->info.max_mtu = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU( 2369 iob->data); 2370 card->info.initial_mtu = min(card->info.max_mtu, 2371 qeth_get_initial_mtu_for_card(card)); 2372 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT; 2373 } 2374 2375 memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2); 2376 if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) { 2377 memcpy(&link_type, 2378 QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1); 2379 card->info.link_type = link_type; 2380 } else 2381 card->info.link_type = 0; 2382 QETH_DBF_TEXT_(SETUP, 2, "link%d", card->info.link_type); 2383 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc); 2384 return 0; 2385 } 2386 2387 static int qeth_ulp_enable(struct qeth_card *card) 2388 { 2389 int rc; 2390 char prot_type; 2391 struct qeth_cmd_buffer *iob; 2392 2393 /*FIXME: trace view callbacks*/ 2394 QETH_DBF_TEXT(SETUP, 2, "ulpenabl"); 2395 2396 iob = qeth_wait_for_buffer(&card->write); 2397 memcpy(iob->data, ULP_ENABLE, ULP_ENABLE_SIZE); 2398 2399 *(QETH_ULP_ENABLE_LINKNUM(iob->data)) = 2400 (__u8) card->info.portno; 2401 if (card->options.layer2) 2402 if (card->info.type == QETH_CARD_TYPE_OSN) 2403 prot_type = QETH_PROT_OSN2; 2404 else 2405 prot_type = QETH_PROT_LAYER2; 2406 else 2407 prot_type = QETH_PROT_TCPIP; 2408 2409 memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1); 2410 memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data), 2411 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH); 2412 memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data), 2413 &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH); 2414 rc = qeth_send_control_data(card, ULP_ENABLE_SIZE, iob, 2415 qeth_ulp_enable_cb, NULL); 2416 return rc; 2417 2418 } 2419 2420 static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply, 2421 unsigned long data) 2422 { 2423 struct qeth_cmd_buffer *iob; 2424 2425 QETH_DBF_TEXT(SETUP, 2, "ulpstpcb"); 2426 2427 iob = (struct qeth_cmd_buffer *) data; 2428 memcpy(&card->token.ulp_connection_r, 2429 QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data), 2430 QETH_MPC_TOKEN_LENGTH); 2431 if (!strncmp("00S", QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data), 2432 3)) { 2433 QETH_DBF_TEXT(SETUP, 2, "olmlimit"); 2434 dev_err(&card->gdev->dev, "A connection could not be " 2435 "established because of an OLM limit\n"); 2436 iob->rc = -EMLINK; 2437 } 2438 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc); 2439 return 0; 2440 } 2441 2442 static int qeth_ulp_setup(struct qeth_card *card) 2443 { 2444 int rc; 2445 __u16 temp; 2446 struct qeth_cmd_buffer *iob; 2447 struct ccw_dev_id dev_id; 2448 2449 QETH_DBF_TEXT(SETUP, 2, "ulpsetup"); 2450 2451 iob = qeth_wait_for_buffer(&card->write); 2452 memcpy(iob->data, ULP_SETUP, ULP_SETUP_SIZE); 2453 2454 memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data), 2455 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH); 2456 memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data), 2457 &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH); 2458 memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data), 2459 &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH); 2460 2461 ccw_device_get_id(CARD_DDEV(card), &dev_id); 2462 memcpy(QETH_ULP_SETUP_CUA(iob->data), &dev_id.devno, 2); 2463 temp = (card->info.cula << 8) + card->info.unit_addr2; 2464 memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2); 2465 rc = qeth_send_control_data(card, ULP_SETUP_SIZE, iob, 2466 qeth_ulp_setup_cb, NULL); 2467 return rc; 2468 } 2469 2470 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *q, int bidx) 2471 { 2472 int rc; 2473 struct qeth_qdio_out_buffer *newbuf; 2474 2475 rc = 0; 2476 newbuf = kmem_cache_zalloc(qeth_qdio_outbuf_cache, GFP_ATOMIC); 2477 if (!newbuf) { 2478 rc = -ENOMEM; 2479 goto out; 2480 } 2481 newbuf->buffer = q->qdio_bufs[bidx]; 2482 skb_queue_head_init(&newbuf->skb_list); 2483 lockdep_set_class(&newbuf->skb_list.lock, &qdio_out_skb_queue_key); 2484 newbuf->q = q; 2485 newbuf->aob = NULL; 2486 newbuf->next_pending = q->bufs[bidx]; 2487 atomic_set(&newbuf->state, QETH_QDIO_BUF_EMPTY); 2488 q->bufs[bidx] = newbuf; 2489 if (q->bufstates) { 2490 q->bufstates[bidx].user = newbuf; 2491 QETH_CARD_TEXT_(q->card, 2, "nbs%d", bidx); 2492 QETH_CARD_TEXT_(q->card, 2, "%lx", (long) newbuf); 2493 QETH_CARD_TEXT_(q->card, 2, "%lx", 2494 (long) newbuf->next_pending); 2495 } 2496 out: 2497 return rc; 2498 } 2499 2500 static void qeth_free_qdio_out_buf(struct qeth_qdio_out_q *q) 2501 { 2502 if (!q) 2503 return; 2504 2505 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q); 2506 kfree(q); 2507 } 2508 2509 static struct qeth_qdio_out_q *qeth_alloc_qdio_out_buf(void) 2510 { 2511 struct qeth_qdio_out_q *q = kzalloc(sizeof(*q), GFP_KERNEL); 2512 2513 if (!q) 2514 return NULL; 2515 2516 if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) { 2517 kfree(q); 2518 return NULL; 2519 } 2520 return q; 2521 } 2522 2523 static int qeth_alloc_qdio_buffers(struct qeth_card *card) 2524 { 2525 int i, j; 2526 2527 QETH_DBF_TEXT(SETUP, 2, "allcqdbf"); 2528 2529 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED, 2530 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED) 2531 return 0; 2532 2533 QETH_DBF_TEXT(SETUP, 2, "inq"); 2534 card->qdio.in_q = qeth_alloc_qdio_queue(); 2535 if (!card->qdio.in_q) 2536 goto out_nomem; 2537 2538 /* inbound buffer pool */ 2539 if (qeth_alloc_buffer_pool(card)) 2540 goto out_freeinq; 2541 2542 /* outbound */ 2543 card->qdio.out_qs = 2544 kzalloc(card->qdio.no_out_queues * 2545 sizeof(struct qeth_qdio_out_q *), GFP_KERNEL); 2546 if (!card->qdio.out_qs) 2547 goto out_freepool; 2548 for (i = 0; i < card->qdio.no_out_queues; ++i) { 2549 card->qdio.out_qs[i] = qeth_alloc_qdio_out_buf(); 2550 if (!card->qdio.out_qs[i]) 2551 goto out_freeoutq; 2552 QETH_DBF_TEXT_(SETUP, 2, "outq %i", i); 2553 QETH_DBF_HEX(SETUP, 2, &card->qdio.out_qs[i], sizeof(void *)); 2554 card->qdio.out_qs[i]->queue_no = i; 2555 /* give outbound qeth_qdio_buffers their qdio_buffers */ 2556 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) { 2557 WARN_ON(card->qdio.out_qs[i]->bufs[j] != NULL); 2558 if (qeth_init_qdio_out_buf(card->qdio.out_qs[i], j)) 2559 goto out_freeoutqbufs; 2560 } 2561 } 2562 2563 /* completion */ 2564 if (qeth_alloc_cq(card)) 2565 goto out_freeoutq; 2566 2567 return 0; 2568 2569 out_freeoutqbufs: 2570 while (j > 0) { 2571 --j; 2572 kmem_cache_free(qeth_qdio_outbuf_cache, 2573 card->qdio.out_qs[i]->bufs[j]); 2574 card->qdio.out_qs[i]->bufs[j] = NULL; 2575 } 2576 out_freeoutq: 2577 while (i > 0) { 2578 qeth_free_qdio_out_buf(card->qdio.out_qs[--i]); 2579 qeth_clear_outq_buffers(card->qdio.out_qs[i], 1); 2580 } 2581 kfree(card->qdio.out_qs); 2582 card->qdio.out_qs = NULL; 2583 out_freepool: 2584 qeth_free_buffer_pool(card); 2585 out_freeinq: 2586 qeth_free_qdio_queue(card->qdio.in_q); 2587 card->qdio.in_q = NULL; 2588 out_nomem: 2589 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED); 2590 return -ENOMEM; 2591 } 2592 2593 static void qeth_free_qdio_buffers(struct qeth_card *card) 2594 { 2595 int i, j; 2596 2597 if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) == 2598 QETH_QDIO_UNINITIALIZED) 2599 return; 2600 2601 qeth_free_cq(card); 2602 cancel_delayed_work_sync(&card->buffer_reclaim_work); 2603 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) { 2604 if (card->qdio.in_q->bufs[j].rx_skb) 2605 dev_kfree_skb_any(card->qdio.in_q->bufs[j].rx_skb); 2606 } 2607 qeth_free_qdio_queue(card->qdio.in_q); 2608 card->qdio.in_q = NULL; 2609 /* inbound buffer pool */ 2610 qeth_free_buffer_pool(card); 2611 /* free outbound qdio_qs */ 2612 if (card->qdio.out_qs) { 2613 for (i = 0; i < card->qdio.no_out_queues; ++i) { 2614 qeth_clear_outq_buffers(card->qdio.out_qs[i], 1); 2615 qeth_free_qdio_out_buf(card->qdio.out_qs[i]); 2616 } 2617 kfree(card->qdio.out_qs); 2618 card->qdio.out_qs = NULL; 2619 } 2620 } 2621 2622 static void qeth_create_qib_param_field(struct qeth_card *card, 2623 char *param_field) 2624 { 2625 2626 param_field[0] = _ascebc['P']; 2627 param_field[1] = _ascebc['C']; 2628 param_field[2] = _ascebc['I']; 2629 param_field[3] = _ascebc['T']; 2630 *((unsigned int *) (¶m_field[4])) = QETH_PCI_THRESHOLD_A(card); 2631 *((unsigned int *) (¶m_field[8])) = QETH_PCI_THRESHOLD_B(card); 2632 *((unsigned int *) (¶m_field[12])) = QETH_PCI_TIMER_VALUE(card); 2633 } 2634 2635 static void qeth_create_qib_param_field_blkt(struct qeth_card *card, 2636 char *param_field) 2637 { 2638 param_field[16] = _ascebc['B']; 2639 param_field[17] = _ascebc['L']; 2640 param_field[18] = _ascebc['K']; 2641 param_field[19] = _ascebc['T']; 2642 *((unsigned int *) (¶m_field[20])) = card->info.blkt.time_total; 2643 *((unsigned int *) (¶m_field[24])) = card->info.blkt.inter_packet; 2644 *((unsigned int *) (¶m_field[28])) = 2645 card->info.blkt.inter_packet_jumbo; 2646 } 2647 2648 static int qeth_qdio_activate(struct qeth_card *card) 2649 { 2650 QETH_DBF_TEXT(SETUP, 3, "qdioact"); 2651 return qdio_activate(CARD_DDEV(card)); 2652 } 2653 2654 static int qeth_dm_act(struct qeth_card *card) 2655 { 2656 int rc; 2657 struct qeth_cmd_buffer *iob; 2658 2659 QETH_DBF_TEXT(SETUP, 2, "dmact"); 2660 2661 iob = qeth_wait_for_buffer(&card->write); 2662 memcpy(iob->data, DM_ACT, DM_ACT_SIZE); 2663 2664 memcpy(QETH_DM_ACT_DEST_ADDR(iob->data), 2665 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH); 2666 memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data), 2667 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH); 2668 rc = qeth_send_control_data(card, DM_ACT_SIZE, iob, NULL, NULL); 2669 return rc; 2670 } 2671 2672 static int qeth_mpc_initialize(struct qeth_card *card) 2673 { 2674 int rc; 2675 2676 QETH_DBF_TEXT(SETUP, 2, "mpcinit"); 2677 2678 rc = qeth_issue_next_read(card); 2679 if (rc) { 2680 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 2681 return rc; 2682 } 2683 rc = qeth_cm_enable(card); 2684 if (rc) { 2685 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc); 2686 goto out_qdio; 2687 } 2688 rc = qeth_cm_setup(card); 2689 if (rc) { 2690 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc); 2691 goto out_qdio; 2692 } 2693 rc = qeth_ulp_enable(card); 2694 if (rc) { 2695 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc); 2696 goto out_qdio; 2697 } 2698 rc = qeth_ulp_setup(card); 2699 if (rc) { 2700 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc); 2701 goto out_qdio; 2702 } 2703 rc = qeth_alloc_qdio_buffers(card); 2704 if (rc) { 2705 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc); 2706 goto out_qdio; 2707 } 2708 rc = qeth_qdio_establish(card); 2709 if (rc) { 2710 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc); 2711 qeth_free_qdio_buffers(card); 2712 goto out_qdio; 2713 } 2714 rc = qeth_qdio_activate(card); 2715 if (rc) { 2716 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc); 2717 goto out_qdio; 2718 } 2719 rc = qeth_dm_act(card); 2720 if (rc) { 2721 QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc); 2722 goto out_qdio; 2723 } 2724 2725 return 0; 2726 out_qdio: 2727 qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD); 2728 qdio_free(CARD_DDEV(card)); 2729 return rc; 2730 } 2731 2732 void qeth_print_status_message(struct qeth_card *card) 2733 { 2734 switch (card->info.type) { 2735 case QETH_CARD_TYPE_OSD: 2736 case QETH_CARD_TYPE_OSM: 2737 case QETH_CARD_TYPE_OSX: 2738 /* VM will use a non-zero first character 2739 * to indicate a HiperSockets like reporting 2740 * of the level OSA sets the first character to zero 2741 * */ 2742 if (!card->info.mcl_level[0]) { 2743 sprintf(card->info.mcl_level, "%02x%02x", 2744 card->info.mcl_level[2], 2745 card->info.mcl_level[3]); 2746 break; 2747 } 2748 /* fallthrough */ 2749 case QETH_CARD_TYPE_IQD: 2750 if ((card->info.guestlan) || 2751 (card->info.mcl_level[0] & 0x80)) { 2752 card->info.mcl_level[0] = (char) _ebcasc[(__u8) 2753 card->info.mcl_level[0]]; 2754 card->info.mcl_level[1] = (char) _ebcasc[(__u8) 2755 card->info.mcl_level[1]]; 2756 card->info.mcl_level[2] = (char) _ebcasc[(__u8) 2757 card->info.mcl_level[2]]; 2758 card->info.mcl_level[3] = (char) _ebcasc[(__u8) 2759 card->info.mcl_level[3]]; 2760 card->info.mcl_level[QETH_MCL_LENGTH] = 0; 2761 } 2762 break; 2763 default: 2764 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1); 2765 } 2766 dev_info(&card->gdev->dev, 2767 "Device is a%s card%s%s%s\nwith link type %s.\n", 2768 qeth_get_cardname(card), 2769 (card->info.mcl_level[0]) ? " (level: " : "", 2770 (card->info.mcl_level[0]) ? card->info.mcl_level : "", 2771 (card->info.mcl_level[0]) ? ")" : "", 2772 qeth_get_cardname_short(card)); 2773 } 2774 EXPORT_SYMBOL_GPL(qeth_print_status_message); 2775 2776 static void qeth_initialize_working_pool_list(struct qeth_card *card) 2777 { 2778 struct qeth_buffer_pool_entry *entry; 2779 2780 QETH_CARD_TEXT(card, 5, "inwrklst"); 2781 2782 list_for_each_entry(entry, 2783 &card->qdio.init_pool.entry_list, init_list) { 2784 qeth_put_buffer_pool_entry(card, entry); 2785 } 2786 } 2787 2788 static struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry( 2789 struct qeth_card *card) 2790 { 2791 struct list_head *plh; 2792 struct qeth_buffer_pool_entry *entry; 2793 int i, free; 2794 struct page *page; 2795 2796 if (list_empty(&card->qdio.in_buf_pool.entry_list)) 2797 return NULL; 2798 2799 list_for_each(plh, &card->qdio.in_buf_pool.entry_list) { 2800 entry = list_entry(plh, struct qeth_buffer_pool_entry, list); 2801 free = 1; 2802 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) { 2803 if (page_count(virt_to_page(entry->elements[i])) > 1) { 2804 free = 0; 2805 break; 2806 } 2807 } 2808 if (free) { 2809 list_del_init(&entry->list); 2810 return entry; 2811 } 2812 } 2813 2814 /* no free buffer in pool so take first one and swap pages */ 2815 entry = list_entry(card->qdio.in_buf_pool.entry_list.next, 2816 struct qeth_buffer_pool_entry, list); 2817 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) { 2818 if (page_count(virt_to_page(entry->elements[i])) > 1) { 2819 page = alloc_page(GFP_ATOMIC); 2820 if (!page) { 2821 return NULL; 2822 } else { 2823 free_page((unsigned long)entry->elements[i]); 2824 entry->elements[i] = page_address(page); 2825 if (card->options.performance_stats) 2826 card->perf_stats.sg_alloc_page_rx++; 2827 } 2828 } 2829 } 2830 list_del_init(&entry->list); 2831 return entry; 2832 } 2833 2834 static int qeth_init_input_buffer(struct qeth_card *card, 2835 struct qeth_qdio_buffer *buf) 2836 { 2837 struct qeth_buffer_pool_entry *pool_entry; 2838 int i; 2839 2840 if ((card->options.cq == QETH_CQ_ENABLED) && (!buf->rx_skb)) { 2841 buf->rx_skb = dev_alloc_skb(QETH_RX_PULL_LEN + ETH_HLEN); 2842 if (!buf->rx_skb) 2843 return 1; 2844 } 2845 2846 pool_entry = qeth_find_free_buffer_pool_entry(card); 2847 if (!pool_entry) 2848 return 1; 2849 2850 /* 2851 * since the buffer is accessed only from the input_tasklet 2852 * there shouldn't be a need to synchronize; also, since we use 2853 * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run out off 2854 * buffers 2855 */ 2856 2857 buf->pool_entry = pool_entry; 2858 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) { 2859 buf->buffer->element[i].length = PAGE_SIZE; 2860 buf->buffer->element[i].addr = pool_entry->elements[i]; 2861 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1) 2862 buf->buffer->element[i].eflags = SBAL_EFLAGS_LAST_ENTRY; 2863 else 2864 buf->buffer->element[i].eflags = 0; 2865 buf->buffer->element[i].sflags = 0; 2866 } 2867 return 0; 2868 } 2869 2870 int qeth_init_qdio_queues(struct qeth_card *card) 2871 { 2872 int i, j; 2873 int rc; 2874 2875 QETH_DBF_TEXT(SETUP, 2, "initqdqs"); 2876 2877 /* inbound queue */ 2878 qdio_reset_buffers(card->qdio.in_q->qdio_bufs, 2879 QDIO_MAX_BUFFERS_PER_Q); 2880 qeth_initialize_working_pool_list(card); 2881 /*give only as many buffers to hardware as we have buffer pool entries*/ 2882 for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; ++i) 2883 qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]); 2884 card->qdio.in_q->next_buf_to_init = 2885 card->qdio.in_buf_pool.buf_count - 1; 2886 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0, 2887 card->qdio.in_buf_pool.buf_count - 1); 2888 if (rc) { 2889 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 2890 return rc; 2891 } 2892 2893 /* completion */ 2894 rc = qeth_cq_init(card); 2895 if (rc) { 2896 return rc; 2897 } 2898 2899 /* outbound queue */ 2900 for (i = 0; i < card->qdio.no_out_queues; ++i) { 2901 qdio_reset_buffers(card->qdio.out_qs[i]->qdio_bufs, 2902 QDIO_MAX_BUFFERS_PER_Q); 2903 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) { 2904 qeth_clear_output_buffer(card->qdio.out_qs[i], 2905 card->qdio.out_qs[i]->bufs[j], 2906 QETH_QDIO_BUF_EMPTY); 2907 } 2908 card->qdio.out_qs[i]->card = card; 2909 card->qdio.out_qs[i]->next_buf_to_fill = 0; 2910 card->qdio.out_qs[i]->do_pack = 0; 2911 atomic_set(&card->qdio.out_qs[i]->used_buffers, 0); 2912 atomic_set(&card->qdio.out_qs[i]->set_pci_flags_count, 0); 2913 atomic_set(&card->qdio.out_qs[i]->state, 2914 QETH_OUT_Q_UNLOCKED); 2915 } 2916 return 0; 2917 } 2918 EXPORT_SYMBOL_GPL(qeth_init_qdio_queues); 2919 2920 static __u8 qeth_get_ipa_adp_type(enum qeth_link_types link_type) 2921 { 2922 switch (link_type) { 2923 case QETH_LINK_TYPE_HSTR: 2924 return 2; 2925 default: 2926 return 1; 2927 } 2928 } 2929 2930 static void qeth_fill_ipacmd_header(struct qeth_card *card, 2931 struct qeth_ipa_cmd *cmd, __u8 command, 2932 enum qeth_prot_versions prot) 2933 { 2934 memset(cmd, 0, sizeof(struct qeth_ipa_cmd)); 2935 cmd->hdr.command = command; 2936 cmd->hdr.initiator = IPA_CMD_INITIATOR_HOST; 2937 /* cmd->hdr.seqno is set by qeth_send_control_data() */ 2938 cmd->hdr.adapter_type = qeth_get_ipa_adp_type(card->info.link_type); 2939 cmd->hdr.rel_adapter_no = (__u8) card->info.portno; 2940 if (card->options.layer2) 2941 cmd->hdr.prim_version_no = 2; 2942 else 2943 cmd->hdr.prim_version_no = 1; 2944 cmd->hdr.param_count = 1; 2945 cmd->hdr.prot_version = prot; 2946 cmd->hdr.ipa_supported = 0; 2947 cmd->hdr.ipa_enabled = 0; 2948 } 2949 2950 struct qeth_cmd_buffer *qeth_get_ipacmd_buffer(struct qeth_card *card, 2951 enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot) 2952 { 2953 struct qeth_cmd_buffer *iob; 2954 struct qeth_ipa_cmd *cmd; 2955 2956 iob = qeth_get_buffer(&card->write); 2957 if (iob) { 2958 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 2959 qeth_fill_ipacmd_header(card, cmd, ipacmd, prot); 2960 } else { 2961 dev_warn(&card->gdev->dev, 2962 "The qeth driver ran out of channel command buffers\n"); 2963 QETH_DBF_MESSAGE(1, "%s The qeth driver ran out of channel command buffers", 2964 dev_name(&card->gdev->dev)); 2965 } 2966 2967 return iob; 2968 } 2969 EXPORT_SYMBOL_GPL(qeth_get_ipacmd_buffer); 2970 2971 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob, 2972 char prot_type) 2973 { 2974 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE); 2975 memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1); 2976 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data), 2977 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH); 2978 } 2979 EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd); 2980 2981 /** 2982 * qeth_send_ipa_cmd() - send an IPA command 2983 * 2984 * See qeth_send_control_data() for explanation of the arguments. 2985 */ 2986 2987 int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob, 2988 int (*reply_cb)(struct qeth_card *, struct qeth_reply*, 2989 unsigned long), 2990 void *reply_param) 2991 { 2992 int rc; 2993 char prot_type; 2994 2995 QETH_CARD_TEXT(card, 4, "sendipa"); 2996 2997 if (card->options.layer2) 2998 if (card->info.type == QETH_CARD_TYPE_OSN) 2999 prot_type = QETH_PROT_OSN2; 3000 else 3001 prot_type = QETH_PROT_LAYER2; 3002 else 3003 prot_type = QETH_PROT_TCPIP; 3004 qeth_prepare_ipa_cmd(card, iob, prot_type); 3005 rc = qeth_send_control_data(card, IPA_CMD_LENGTH, 3006 iob, reply_cb, reply_param); 3007 if (rc == -ETIME) { 3008 qeth_clear_ipacmd_list(card); 3009 qeth_schedule_recovery(card); 3010 } 3011 return rc; 3012 } 3013 EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd); 3014 3015 static int qeth_send_startlan(struct qeth_card *card) 3016 { 3017 int rc; 3018 struct qeth_cmd_buffer *iob; 3019 3020 QETH_DBF_TEXT(SETUP, 2, "strtlan"); 3021 3022 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_STARTLAN, 0); 3023 if (!iob) 3024 return -ENOMEM; 3025 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL); 3026 return rc; 3027 } 3028 3029 static int qeth_default_setadapterparms_cb(struct qeth_card *card, 3030 struct qeth_reply *reply, unsigned long data) 3031 { 3032 struct qeth_ipa_cmd *cmd; 3033 3034 QETH_CARD_TEXT(card, 4, "defadpcb"); 3035 3036 cmd = (struct qeth_ipa_cmd *) data; 3037 if (cmd->hdr.return_code == 0) 3038 cmd->hdr.return_code = 3039 cmd->data.setadapterparms.hdr.return_code; 3040 return 0; 3041 } 3042 3043 static int qeth_query_setadapterparms_cb(struct qeth_card *card, 3044 struct qeth_reply *reply, unsigned long data) 3045 { 3046 struct qeth_ipa_cmd *cmd; 3047 3048 QETH_CARD_TEXT(card, 3, "quyadpcb"); 3049 3050 cmd = (struct qeth_ipa_cmd *) data; 3051 if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f) { 3052 card->info.link_type = 3053 cmd->data.setadapterparms.data.query_cmds_supp.lan_type; 3054 QETH_DBF_TEXT_(SETUP, 2, "lnk %d", card->info.link_type); 3055 } 3056 card->options.adp.supported_funcs = 3057 cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds; 3058 return qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd); 3059 } 3060 3061 static struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card, 3062 __u32 command, __u32 cmdlen) 3063 { 3064 struct qeth_cmd_buffer *iob; 3065 struct qeth_ipa_cmd *cmd; 3066 3067 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETADAPTERPARMS, 3068 QETH_PROT_IPV4); 3069 if (iob) { 3070 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 3071 cmd->data.setadapterparms.hdr.cmdlength = cmdlen; 3072 cmd->data.setadapterparms.hdr.command_code = command; 3073 cmd->data.setadapterparms.hdr.used_total = 1; 3074 cmd->data.setadapterparms.hdr.seq_no = 1; 3075 } 3076 3077 return iob; 3078 } 3079 3080 int qeth_query_setadapterparms(struct qeth_card *card) 3081 { 3082 int rc; 3083 struct qeth_cmd_buffer *iob; 3084 3085 QETH_CARD_TEXT(card, 3, "queryadp"); 3086 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED, 3087 sizeof(struct qeth_ipacmd_setadpparms)); 3088 if (!iob) 3089 return -ENOMEM; 3090 rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL); 3091 return rc; 3092 } 3093 EXPORT_SYMBOL_GPL(qeth_query_setadapterparms); 3094 3095 static int qeth_query_ipassists_cb(struct qeth_card *card, 3096 struct qeth_reply *reply, unsigned long data) 3097 { 3098 struct qeth_ipa_cmd *cmd; 3099 3100 QETH_DBF_TEXT(SETUP, 2, "qipasscb"); 3101 3102 cmd = (struct qeth_ipa_cmd *) data; 3103 3104 switch (cmd->hdr.return_code) { 3105 case IPA_RC_NOTSUPP: 3106 case IPA_RC_L2_UNSUPPORTED_CMD: 3107 QETH_DBF_TEXT(SETUP, 2, "ipaunsup"); 3108 card->options.ipa4.supported_funcs |= IPA_SETADAPTERPARMS; 3109 card->options.ipa6.supported_funcs |= IPA_SETADAPTERPARMS; 3110 return -0; 3111 default: 3112 if (cmd->hdr.return_code) { 3113 QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Unhandled " 3114 "rc=%d\n", 3115 dev_name(&card->gdev->dev), 3116 cmd->hdr.return_code); 3117 return 0; 3118 } 3119 } 3120 3121 if (cmd->hdr.prot_version == QETH_PROT_IPV4) { 3122 card->options.ipa4.supported_funcs = cmd->hdr.ipa_supported; 3123 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled; 3124 } else if (cmd->hdr.prot_version == QETH_PROT_IPV6) { 3125 card->options.ipa6.supported_funcs = cmd->hdr.ipa_supported; 3126 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled; 3127 } else 3128 QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Flawed LIC detected" 3129 "\n", dev_name(&card->gdev->dev)); 3130 return 0; 3131 } 3132 3133 int qeth_query_ipassists(struct qeth_card *card, enum qeth_prot_versions prot) 3134 { 3135 int rc; 3136 struct qeth_cmd_buffer *iob; 3137 3138 QETH_DBF_TEXT_(SETUP, 2, "qipassi%i", prot); 3139 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_QIPASSIST, prot); 3140 if (!iob) 3141 return -ENOMEM; 3142 rc = qeth_send_ipa_cmd(card, iob, qeth_query_ipassists_cb, NULL); 3143 return rc; 3144 } 3145 EXPORT_SYMBOL_GPL(qeth_query_ipassists); 3146 3147 static int qeth_query_switch_attributes_cb(struct qeth_card *card, 3148 struct qeth_reply *reply, unsigned long data) 3149 { 3150 struct qeth_ipa_cmd *cmd; 3151 struct qeth_switch_info *sw_info; 3152 struct qeth_query_switch_attributes *attrs; 3153 3154 QETH_CARD_TEXT(card, 2, "qswiatcb"); 3155 cmd = (struct qeth_ipa_cmd *) data; 3156 sw_info = (struct qeth_switch_info *)reply->param; 3157 if (cmd->data.setadapterparms.hdr.return_code == 0) { 3158 attrs = &cmd->data.setadapterparms.data.query_switch_attributes; 3159 sw_info->capabilities = attrs->capabilities; 3160 sw_info->settings = attrs->settings; 3161 QETH_CARD_TEXT_(card, 2, "%04x%04x", sw_info->capabilities, 3162 sw_info->settings); 3163 } 3164 qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd); 3165 3166 return 0; 3167 } 3168 3169 int qeth_query_switch_attributes(struct qeth_card *card, 3170 struct qeth_switch_info *sw_info) 3171 { 3172 struct qeth_cmd_buffer *iob; 3173 3174 QETH_CARD_TEXT(card, 2, "qswiattr"); 3175 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES)) 3176 return -EOPNOTSUPP; 3177 if (!netif_carrier_ok(card->dev)) 3178 return -ENOMEDIUM; 3179 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES, 3180 sizeof(struct qeth_ipacmd_setadpparms_hdr)); 3181 if (!iob) 3182 return -ENOMEM; 3183 return qeth_send_ipa_cmd(card, iob, 3184 qeth_query_switch_attributes_cb, sw_info); 3185 } 3186 EXPORT_SYMBOL_GPL(qeth_query_switch_attributes); 3187 3188 static int qeth_query_setdiagass_cb(struct qeth_card *card, 3189 struct qeth_reply *reply, unsigned long data) 3190 { 3191 struct qeth_ipa_cmd *cmd; 3192 __u16 rc; 3193 3194 cmd = (struct qeth_ipa_cmd *)data; 3195 rc = cmd->hdr.return_code; 3196 if (rc) 3197 QETH_CARD_TEXT_(card, 2, "diagq:%x", rc); 3198 else 3199 card->info.diagass_support = cmd->data.diagass.ext; 3200 return 0; 3201 } 3202 3203 static int qeth_query_setdiagass(struct qeth_card *card) 3204 { 3205 struct qeth_cmd_buffer *iob; 3206 struct qeth_ipa_cmd *cmd; 3207 3208 QETH_DBF_TEXT(SETUP, 2, "qdiagass"); 3209 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0); 3210 if (!iob) 3211 return -ENOMEM; 3212 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 3213 cmd->data.diagass.subcmd_len = 16; 3214 cmd->data.diagass.subcmd = QETH_DIAGS_CMD_QUERY; 3215 return qeth_send_ipa_cmd(card, iob, qeth_query_setdiagass_cb, NULL); 3216 } 3217 3218 static void qeth_get_trap_id(struct qeth_card *card, struct qeth_trap_id *tid) 3219 { 3220 unsigned long info = get_zeroed_page(GFP_KERNEL); 3221 struct sysinfo_2_2_2 *info222 = (struct sysinfo_2_2_2 *)info; 3222 struct sysinfo_3_2_2 *info322 = (struct sysinfo_3_2_2 *)info; 3223 struct ccw_dev_id ccwid; 3224 int level; 3225 3226 tid->chpid = card->info.chpid; 3227 ccw_device_get_id(CARD_RDEV(card), &ccwid); 3228 tid->ssid = ccwid.ssid; 3229 tid->devno = ccwid.devno; 3230 if (!info) 3231 return; 3232 level = stsi(NULL, 0, 0, 0); 3233 if ((level >= 2) && (stsi(info222, 2, 2, 2) == 0)) 3234 tid->lparnr = info222->lpar_number; 3235 if ((level >= 3) && (stsi(info322, 3, 2, 2) == 0)) { 3236 EBCASC(info322->vm[0].name, sizeof(info322->vm[0].name)); 3237 memcpy(tid->vmname, info322->vm[0].name, sizeof(tid->vmname)); 3238 } 3239 free_page(info); 3240 return; 3241 } 3242 3243 static int qeth_hw_trap_cb(struct qeth_card *card, 3244 struct qeth_reply *reply, unsigned long data) 3245 { 3246 struct qeth_ipa_cmd *cmd; 3247 __u16 rc; 3248 3249 cmd = (struct qeth_ipa_cmd *)data; 3250 rc = cmd->hdr.return_code; 3251 if (rc) 3252 QETH_CARD_TEXT_(card, 2, "trapc:%x", rc); 3253 return 0; 3254 } 3255 3256 int qeth_hw_trap(struct qeth_card *card, enum qeth_diags_trap_action action) 3257 { 3258 struct qeth_cmd_buffer *iob; 3259 struct qeth_ipa_cmd *cmd; 3260 3261 QETH_DBF_TEXT(SETUP, 2, "diagtrap"); 3262 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0); 3263 if (!iob) 3264 return -ENOMEM; 3265 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 3266 cmd->data.diagass.subcmd_len = 80; 3267 cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRAP; 3268 cmd->data.diagass.type = 1; 3269 cmd->data.diagass.action = action; 3270 switch (action) { 3271 case QETH_DIAGS_TRAP_ARM: 3272 cmd->data.diagass.options = 0x0003; 3273 cmd->data.diagass.ext = 0x00010000 + 3274 sizeof(struct qeth_trap_id); 3275 qeth_get_trap_id(card, 3276 (struct qeth_trap_id *)cmd->data.diagass.cdata); 3277 break; 3278 case QETH_DIAGS_TRAP_DISARM: 3279 cmd->data.diagass.options = 0x0001; 3280 break; 3281 case QETH_DIAGS_TRAP_CAPTURE: 3282 break; 3283 } 3284 return qeth_send_ipa_cmd(card, iob, qeth_hw_trap_cb, NULL); 3285 } 3286 EXPORT_SYMBOL_GPL(qeth_hw_trap); 3287 3288 static int qeth_check_qdio_errors(struct qeth_card *card, 3289 struct qdio_buffer *buf, 3290 unsigned int qdio_error, 3291 const char *dbftext) 3292 { 3293 if (qdio_error) { 3294 QETH_CARD_TEXT(card, 2, dbftext); 3295 QETH_CARD_TEXT_(card, 2, " F15=%02X", 3296 buf->element[15].sflags); 3297 QETH_CARD_TEXT_(card, 2, " F14=%02X", 3298 buf->element[14].sflags); 3299 QETH_CARD_TEXT_(card, 2, " qerr=%X", qdio_error); 3300 if ((buf->element[15].sflags) == 0x12) { 3301 card->stats.rx_dropped++; 3302 return 0; 3303 } else 3304 return 1; 3305 } 3306 return 0; 3307 } 3308 3309 static void qeth_queue_input_buffer(struct qeth_card *card, int index) 3310 { 3311 struct qeth_qdio_q *queue = card->qdio.in_q; 3312 struct list_head *lh; 3313 int count; 3314 int i; 3315 int rc; 3316 int newcount = 0; 3317 3318 count = (index < queue->next_buf_to_init)? 3319 card->qdio.in_buf_pool.buf_count - 3320 (queue->next_buf_to_init - index) : 3321 card->qdio.in_buf_pool.buf_count - 3322 (queue->next_buf_to_init + QDIO_MAX_BUFFERS_PER_Q - index); 3323 /* only requeue at a certain threshold to avoid SIGAs */ 3324 if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) { 3325 for (i = queue->next_buf_to_init; 3326 i < queue->next_buf_to_init + count; ++i) { 3327 if (qeth_init_input_buffer(card, 3328 &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q])) { 3329 break; 3330 } else { 3331 newcount++; 3332 } 3333 } 3334 3335 if (newcount < count) { 3336 /* we are in memory shortage so we switch back to 3337 traditional skb allocation and drop packages */ 3338 atomic_set(&card->force_alloc_skb, 3); 3339 count = newcount; 3340 } else { 3341 atomic_add_unless(&card->force_alloc_skb, -1, 0); 3342 } 3343 3344 if (!count) { 3345 i = 0; 3346 list_for_each(lh, &card->qdio.in_buf_pool.entry_list) 3347 i++; 3348 if (i == card->qdio.in_buf_pool.buf_count) { 3349 QETH_CARD_TEXT(card, 2, "qsarbw"); 3350 card->reclaim_index = index; 3351 schedule_delayed_work( 3352 &card->buffer_reclaim_work, 3353 QETH_RECLAIM_WORK_TIME); 3354 } 3355 return; 3356 } 3357 3358 /* 3359 * according to old code it should be avoided to requeue all 3360 * 128 buffers in order to benefit from PCI avoidance. 3361 * this function keeps at least one buffer (the buffer at 3362 * 'index') un-requeued -> this buffer is the first buffer that 3363 * will be requeued the next time 3364 */ 3365 if (card->options.performance_stats) { 3366 card->perf_stats.inbound_do_qdio_cnt++; 3367 card->perf_stats.inbound_do_qdio_start_time = 3368 qeth_get_micros(); 3369 } 3370 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 3371 queue->next_buf_to_init, count); 3372 if (card->options.performance_stats) 3373 card->perf_stats.inbound_do_qdio_time += 3374 qeth_get_micros() - 3375 card->perf_stats.inbound_do_qdio_start_time; 3376 if (rc) { 3377 QETH_CARD_TEXT(card, 2, "qinberr"); 3378 } 3379 queue->next_buf_to_init = (queue->next_buf_to_init + count) % 3380 QDIO_MAX_BUFFERS_PER_Q; 3381 } 3382 } 3383 3384 static void qeth_buffer_reclaim_work(struct work_struct *work) 3385 { 3386 struct qeth_card *card = container_of(work, struct qeth_card, 3387 buffer_reclaim_work.work); 3388 3389 QETH_CARD_TEXT_(card, 2, "brw:%x", card->reclaim_index); 3390 qeth_queue_input_buffer(card, card->reclaim_index); 3391 } 3392 3393 static void qeth_handle_send_error(struct qeth_card *card, 3394 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err) 3395 { 3396 int sbalf15 = buffer->buffer->element[15].sflags; 3397 3398 QETH_CARD_TEXT(card, 6, "hdsnderr"); 3399 if (card->info.type == QETH_CARD_TYPE_IQD) { 3400 if (sbalf15 == 0) { 3401 qdio_err = 0; 3402 } else { 3403 qdio_err = 1; 3404 } 3405 } 3406 qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr"); 3407 3408 if (!qdio_err) 3409 return; 3410 3411 if ((sbalf15 >= 15) && (sbalf15 <= 31)) 3412 return; 3413 3414 QETH_CARD_TEXT(card, 1, "lnkfail"); 3415 QETH_CARD_TEXT_(card, 1, "%04x %02x", 3416 (u16)qdio_err, (u8)sbalf15); 3417 } 3418 3419 /** 3420 * qeth_prep_flush_pack_buffer - Prepares flushing of a packing buffer. 3421 * @queue: queue to check for packing buffer 3422 * 3423 * Returns number of buffers that were prepared for flush. 3424 */ 3425 static int qeth_prep_flush_pack_buffer(struct qeth_qdio_out_q *queue) 3426 { 3427 struct qeth_qdio_out_buffer *buffer; 3428 3429 buffer = queue->bufs[queue->next_buf_to_fill]; 3430 if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) && 3431 (buffer->next_element_to_fill > 0)) { 3432 /* it's a packing buffer */ 3433 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED); 3434 queue->next_buf_to_fill = 3435 (queue->next_buf_to_fill + 1) % QDIO_MAX_BUFFERS_PER_Q; 3436 return 1; 3437 } 3438 return 0; 3439 } 3440 3441 /* 3442 * Switched to packing state if the number of used buffers on a queue 3443 * reaches a certain limit. 3444 */ 3445 static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue) 3446 { 3447 if (!queue->do_pack) { 3448 if (atomic_read(&queue->used_buffers) 3449 >= QETH_HIGH_WATERMARK_PACK){ 3450 /* switch non-PACKING -> PACKING */ 3451 QETH_CARD_TEXT(queue->card, 6, "np->pack"); 3452 if (queue->card->options.performance_stats) 3453 queue->card->perf_stats.sc_dp_p++; 3454 queue->do_pack = 1; 3455 } 3456 } 3457 } 3458 3459 /* 3460 * Switches from packing to non-packing mode. If there is a packing 3461 * buffer on the queue this buffer will be prepared to be flushed. 3462 * In that case 1 is returned to inform the caller. If no buffer 3463 * has to be flushed, zero is returned. 3464 */ 3465 static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue) 3466 { 3467 if (queue->do_pack) { 3468 if (atomic_read(&queue->used_buffers) 3469 <= QETH_LOW_WATERMARK_PACK) { 3470 /* switch PACKING -> non-PACKING */ 3471 QETH_CARD_TEXT(queue->card, 6, "pack->np"); 3472 if (queue->card->options.performance_stats) 3473 queue->card->perf_stats.sc_p_dp++; 3474 queue->do_pack = 0; 3475 return qeth_prep_flush_pack_buffer(queue); 3476 } 3477 } 3478 return 0; 3479 } 3480 3481 static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index, 3482 int count) 3483 { 3484 struct qeth_qdio_out_buffer *buf; 3485 int rc; 3486 int i; 3487 unsigned int qdio_flags; 3488 3489 for (i = index; i < index + count; ++i) { 3490 int bidx = i % QDIO_MAX_BUFFERS_PER_Q; 3491 buf = queue->bufs[bidx]; 3492 buf->buffer->element[buf->next_element_to_fill - 1].eflags |= 3493 SBAL_EFLAGS_LAST_ENTRY; 3494 3495 if (queue->bufstates) 3496 queue->bufstates[bidx].user = buf; 3497 3498 if (queue->card->info.type == QETH_CARD_TYPE_IQD) 3499 continue; 3500 3501 if (!queue->do_pack) { 3502 if ((atomic_read(&queue->used_buffers) >= 3503 (QETH_HIGH_WATERMARK_PACK - 3504 QETH_WATERMARK_PACK_FUZZ)) && 3505 !atomic_read(&queue->set_pci_flags_count)) { 3506 /* it's likely that we'll go to packing 3507 * mode soon */ 3508 atomic_inc(&queue->set_pci_flags_count); 3509 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ; 3510 } 3511 } else { 3512 if (!atomic_read(&queue->set_pci_flags_count)) { 3513 /* 3514 * there's no outstanding PCI any more, so we 3515 * have to request a PCI to be sure the the PCI 3516 * will wake at some time in the future then we 3517 * can flush packed buffers that might still be 3518 * hanging around, which can happen if no 3519 * further send was requested by the stack 3520 */ 3521 atomic_inc(&queue->set_pci_flags_count); 3522 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ; 3523 } 3524 } 3525 } 3526 3527 netif_trans_update(queue->card->dev); 3528 if (queue->card->options.performance_stats) { 3529 queue->card->perf_stats.outbound_do_qdio_cnt++; 3530 queue->card->perf_stats.outbound_do_qdio_start_time = 3531 qeth_get_micros(); 3532 } 3533 qdio_flags = QDIO_FLAG_SYNC_OUTPUT; 3534 if (atomic_read(&queue->set_pci_flags_count)) 3535 qdio_flags |= QDIO_FLAG_PCI_OUT; 3536 rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags, 3537 queue->queue_no, index, count); 3538 if (queue->card->options.performance_stats) 3539 queue->card->perf_stats.outbound_do_qdio_time += 3540 qeth_get_micros() - 3541 queue->card->perf_stats.outbound_do_qdio_start_time; 3542 atomic_add(count, &queue->used_buffers); 3543 if (rc) { 3544 queue->card->stats.tx_errors += count; 3545 /* ignore temporary SIGA errors without busy condition */ 3546 if (rc == -ENOBUFS) 3547 return; 3548 QETH_CARD_TEXT(queue->card, 2, "flushbuf"); 3549 QETH_CARD_TEXT_(queue->card, 2, " q%d", queue->queue_no); 3550 QETH_CARD_TEXT_(queue->card, 2, " idx%d", index); 3551 QETH_CARD_TEXT_(queue->card, 2, " c%d", count); 3552 QETH_CARD_TEXT_(queue->card, 2, " err%d", rc); 3553 3554 /* this must not happen under normal circumstances. if it 3555 * happens something is really wrong -> recover */ 3556 qeth_schedule_recovery(queue->card); 3557 return; 3558 } 3559 if (queue->card->options.performance_stats) 3560 queue->card->perf_stats.bufs_sent += count; 3561 } 3562 3563 static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue) 3564 { 3565 int index; 3566 int flush_cnt = 0; 3567 int q_was_packing = 0; 3568 3569 /* 3570 * check if weed have to switch to non-packing mode or if 3571 * we have to get a pci flag out on the queue 3572 */ 3573 if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) || 3574 !atomic_read(&queue->set_pci_flags_count)) { 3575 if (atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH) == 3576 QETH_OUT_Q_UNLOCKED) { 3577 /* 3578 * If we get in here, there was no action in 3579 * do_send_packet. So, we check if there is a 3580 * packing buffer to be flushed here. 3581 */ 3582 netif_stop_queue(queue->card->dev); 3583 index = queue->next_buf_to_fill; 3584 q_was_packing = queue->do_pack; 3585 /* queue->do_pack may change */ 3586 barrier(); 3587 flush_cnt += qeth_switch_to_nonpacking_if_needed(queue); 3588 if (!flush_cnt && 3589 !atomic_read(&queue->set_pci_flags_count)) 3590 flush_cnt += qeth_prep_flush_pack_buffer(queue); 3591 if (queue->card->options.performance_stats && 3592 q_was_packing) 3593 queue->card->perf_stats.bufs_sent_pack += 3594 flush_cnt; 3595 if (flush_cnt) 3596 qeth_flush_buffers(queue, index, flush_cnt); 3597 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED); 3598 } 3599 } 3600 } 3601 3602 void qeth_qdio_start_poll(struct ccw_device *ccwdev, int queue, 3603 unsigned long card_ptr) 3604 { 3605 struct qeth_card *card = (struct qeth_card *)card_ptr; 3606 3607 if (card->dev && (card->dev->flags & IFF_UP)) 3608 napi_schedule(&card->napi); 3609 } 3610 EXPORT_SYMBOL_GPL(qeth_qdio_start_poll); 3611 3612 int qeth_configure_cq(struct qeth_card *card, enum qeth_cq cq) 3613 { 3614 int rc; 3615 3616 if (card->options.cq == QETH_CQ_NOTAVAILABLE) { 3617 rc = -1; 3618 goto out; 3619 } else { 3620 if (card->options.cq == cq) { 3621 rc = 0; 3622 goto out; 3623 } 3624 3625 if (card->state != CARD_STATE_DOWN && 3626 card->state != CARD_STATE_RECOVER) { 3627 rc = -1; 3628 goto out; 3629 } 3630 3631 qeth_free_qdio_buffers(card); 3632 card->options.cq = cq; 3633 rc = 0; 3634 } 3635 out: 3636 return rc; 3637 3638 } 3639 EXPORT_SYMBOL_GPL(qeth_configure_cq); 3640 3641 3642 static void qeth_qdio_cq_handler(struct qeth_card *card, 3643 unsigned int qdio_err, 3644 unsigned int queue, int first_element, int count) { 3645 struct qeth_qdio_q *cq = card->qdio.c_q; 3646 int i; 3647 int rc; 3648 3649 if (!qeth_is_cq(card, queue)) 3650 goto out; 3651 3652 QETH_CARD_TEXT_(card, 5, "qcqhe%d", first_element); 3653 QETH_CARD_TEXT_(card, 5, "qcqhc%d", count); 3654 QETH_CARD_TEXT_(card, 5, "qcqherr%d", qdio_err); 3655 3656 if (qdio_err) { 3657 netif_stop_queue(card->dev); 3658 qeth_schedule_recovery(card); 3659 goto out; 3660 } 3661 3662 if (card->options.performance_stats) { 3663 card->perf_stats.cq_cnt++; 3664 card->perf_stats.cq_start_time = qeth_get_micros(); 3665 } 3666 3667 for (i = first_element; i < first_element + count; ++i) { 3668 int bidx = i % QDIO_MAX_BUFFERS_PER_Q; 3669 struct qdio_buffer *buffer = cq->qdio_bufs[bidx]; 3670 int e; 3671 3672 e = 0; 3673 while ((e < QDIO_MAX_ELEMENTS_PER_BUFFER) && 3674 buffer->element[e].addr) { 3675 unsigned long phys_aob_addr; 3676 3677 phys_aob_addr = (unsigned long) buffer->element[e].addr; 3678 qeth_qdio_handle_aob(card, phys_aob_addr); 3679 buffer->element[e].addr = NULL; 3680 buffer->element[e].eflags = 0; 3681 buffer->element[e].sflags = 0; 3682 buffer->element[e].length = 0; 3683 3684 ++e; 3685 } 3686 3687 buffer->element[15].eflags = 0; 3688 buffer->element[15].sflags = 0; 3689 } 3690 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, queue, 3691 card->qdio.c_q->next_buf_to_init, 3692 count); 3693 if (rc) { 3694 dev_warn(&card->gdev->dev, 3695 "QDIO reported an error, rc=%i\n", rc); 3696 QETH_CARD_TEXT(card, 2, "qcqherr"); 3697 } 3698 card->qdio.c_q->next_buf_to_init = (card->qdio.c_q->next_buf_to_init 3699 + count) % QDIO_MAX_BUFFERS_PER_Q; 3700 3701 netif_wake_queue(card->dev); 3702 3703 if (card->options.performance_stats) { 3704 int delta_t = qeth_get_micros(); 3705 delta_t -= card->perf_stats.cq_start_time; 3706 card->perf_stats.cq_time += delta_t; 3707 } 3708 out: 3709 return; 3710 } 3711 3712 void qeth_qdio_input_handler(struct ccw_device *ccwdev, unsigned int qdio_err, 3713 unsigned int queue, int first_elem, int count, 3714 unsigned long card_ptr) 3715 { 3716 struct qeth_card *card = (struct qeth_card *)card_ptr; 3717 3718 QETH_CARD_TEXT_(card, 2, "qihq%d", queue); 3719 QETH_CARD_TEXT_(card, 2, "qiec%d", qdio_err); 3720 3721 if (qeth_is_cq(card, queue)) 3722 qeth_qdio_cq_handler(card, qdio_err, queue, first_elem, count); 3723 else if (qdio_err) 3724 qeth_schedule_recovery(card); 3725 3726 3727 } 3728 EXPORT_SYMBOL_GPL(qeth_qdio_input_handler); 3729 3730 void qeth_qdio_output_handler(struct ccw_device *ccwdev, 3731 unsigned int qdio_error, int __queue, int first_element, 3732 int count, unsigned long card_ptr) 3733 { 3734 struct qeth_card *card = (struct qeth_card *) card_ptr; 3735 struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue]; 3736 struct qeth_qdio_out_buffer *buffer; 3737 int i; 3738 3739 QETH_CARD_TEXT(card, 6, "qdouhdl"); 3740 if (qdio_error & QDIO_ERROR_FATAL) { 3741 QETH_CARD_TEXT(card, 2, "achkcond"); 3742 netif_stop_queue(card->dev); 3743 qeth_schedule_recovery(card); 3744 return; 3745 } 3746 if (card->options.performance_stats) { 3747 card->perf_stats.outbound_handler_cnt++; 3748 card->perf_stats.outbound_handler_start_time = 3749 qeth_get_micros(); 3750 } 3751 for (i = first_element; i < (first_element + count); ++i) { 3752 int bidx = i % QDIO_MAX_BUFFERS_PER_Q; 3753 buffer = queue->bufs[bidx]; 3754 qeth_handle_send_error(card, buffer, qdio_error); 3755 3756 if (queue->bufstates && 3757 (queue->bufstates[bidx].flags & 3758 QDIO_OUTBUF_STATE_FLAG_PENDING) != 0) { 3759 WARN_ON_ONCE(card->options.cq != QETH_CQ_ENABLED); 3760 3761 if (atomic_cmpxchg(&buffer->state, 3762 QETH_QDIO_BUF_PRIMED, 3763 QETH_QDIO_BUF_PENDING) == 3764 QETH_QDIO_BUF_PRIMED) { 3765 qeth_notify_skbs(queue, buffer, 3766 TX_NOTIFY_PENDING); 3767 } 3768 buffer->aob = queue->bufstates[bidx].aob; 3769 QETH_CARD_TEXT_(queue->card, 5, "pel%d", bidx); 3770 QETH_CARD_TEXT(queue->card, 5, "aob"); 3771 QETH_CARD_TEXT_(queue->card, 5, "%lx", 3772 virt_to_phys(buffer->aob)); 3773 if (qeth_init_qdio_out_buf(queue, bidx)) { 3774 QETH_CARD_TEXT(card, 2, "outofbuf"); 3775 qeth_schedule_recovery(card); 3776 } 3777 } else { 3778 if (card->options.cq == QETH_CQ_ENABLED) { 3779 enum iucv_tx_notify n; 3780 3781 n = qeth_compute_cq_notification( 3782 buffer->buffer->element[15].sflags, 0); 3783 qeth_notify_skbs(queue, buffer, n); 3784 } 3785 3786 qeth_clear_output_buffer(queue, buffer, 3787 QETH_QDIO_BUF_EMPTY); 3788 } 3789 qeth_cleanup_handled_pending(queue, bidx, 0); 3790 } 3791 atomic_sub(count, &queue->used_buffers); 3792 /* check if we need to do something on this outbound queue */ 3793 if (card->info.type != QETH_CARD_TYPE_IQD) 3794 qeth_check_outbound_queue(queue); 3795 3796 netif_wake_queue(queue->card->dev); 3797 if (card->options.performance_stats) 3798 card->perf_stats.outbound_handler_time += qeth_get_micros() - 3799 card->perf_stats.outbound_handler_start_time; 3800 } 3801 EXPORT_SYMBOL_GPL(qeth_qdio_output_handler); 3802 3803 /* We cannot use outbound queue 3 for unicast packets on HiperSockets */ 3804 static inline int qeth_cut_iqd_prio(struct qeth_card *card, int queue_num) 3805 { 3806 if ((card->info.type == QETH_CARD_TYPE_IQD) && (queue_num == 3)) 3807 return 2; 3808 return queue_num; 3809 } 3810 3811 /** 3812 * Note: Function assumes that we have 4 outbound queues. 3813 */ 3814 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb, 3815 int ipv, int cast_type) 3816 { 3817 __be16 *tci; 3818 u8 tos; 3819 3820 if (cast_type && card->info.is_multicast_different) 3821 return card->info.is_multicast_different & 3822 (card->qdio.no_out_queues - 1); 3823 3824 switch (card->qdio.do_prio_queueing) { 3825 case QETH_PRIO_Q_ING_TOS: 3826 case QETH_PRIO_Q_ING_PREC: 3827 switch (ipv) { 3828 case 4: 3829 tos = ipv4_get_dsfield(ip_hdr(skb)); 3830 break; 3831 case 6: 3832 tos = ipv6_get_dsfield(ipv6_hdr(skb)); 3833 break; 3834 default: 3835 return card->qdio.default_out_queue; 3836 } 3837 if (card->qdio.do_prio_queueing == QETH_PRIO_Q_ING_PREC) 3838 return qeth_cut_iqd_prio(card, ~tos >> 6 & 3); 3839 if (tos & IPTOS_MINCOST) 3840 return qeth_cut_iqd_prio(card, 3); 3841 if (tos & IPTOS_RELIABILITY) 3842 return 2; 3843 if (tos & IPTOS_THROUGHPUT) 3844 return 1; 3845 if (tos & IPTOS_LOWDELAY) 3846 return 0; 3847 break; 3848 case QETH_PRIO_Q_ING_SKB: 3849 if (skb->priority > 5) 3850 return 0; 3851 return qeth_cut_iqd_prio(card, ~skb->priority >> 1 & 3); 3852 case QETH_PRIO_Q_ING_VLAN: 3853 tci = &((struct ethhdr *)skb->data)->h_proto; 3854 if (be16_to_cpu(*tci) == ETH_P_8021Q) 3855 return qeth_cut_iqd_prio(card, 3856 ~be16_to_cpu(*(tci + 1)) >> (VLAN_PRIO_SHIFT + 1) & 3); 3857 break; 3858 default: 3859 break; 3860 } 3861 return card->qdio.default_out_queue; 3862 } 3863 EXPORT_SYMBOL_GPL(qeth_get_priority_queue); 3864 3865 /** 3866 * qeth_get_elements_for_frags() - find number of SBALEs for skb frags. 3867 * @skb: SKB address 3868 * 3869 * Returns the number of pages, and thus QDIO buffer elements, needed to cover 3870 * fragmented part of the SKB. Returns zero for linear SKB. 3871 */ 3872 int qeth_get_elements_for_frags(struct sk_buff *skb) 3873 { 3874 int cnt, elements = 0; 3875 3876 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) { 3877 struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[cnt]; 3878 3879 elements += qeth_get_elements_for_range( 3880 (addr_t)skb_frag_address(frag), 3881 (addr_t)skb_frag_address(frag) + skb_frag_size(frag)); 3882 } 3883 return elements; 3884 } 3885 EXPORT_SYMBOL_GPL(qeth_get_elements_for_frags); 3886 3887 /** 3888 * qeth_get_elements_no() - find number of SBALEs for skb data, inc. frags. 3889 * @card: qeth card structure, to check max. elems. 3890 * @skb: SKB address 3891 * @extra_elems: extra elems needed, to check against max. 3892 * @data_offset: range starts at skb->data + data_offset 3893 * 3894 * Returns the number of pages, and thus QDIO buffer elements, needed to cover 3895 * skb data, including linear part and fragments. Checks if the result plus 3896 * extra_elems fits under the limit for the card. Returns 0 if it does not. 3897 * Note: extra_elems is not included in the returned result. 3898 */ 3899 int qeth_get_elements_no(struct qeth_card *card, 3900 struct sk_buff *skb, int extra_elems, int data_offset) 3901 { 3902 addr_t end = (addr_t)skb->data + skb_headlen(skb); 3903 int elements = qeth_get_elements_for_frags(skb); 3904 addr_t start = (addr_t)skb->data + data_offset; 3905 3906 if (start != end) 3907 elements += qeth_get_elements_for_range(start, end); 3908 3909 if ((elements + extra_elems) > QETH_MAX_BUFFER_ELEMENTS(card)) { 3910 QETH_DBF_MESSAGE(2, "Invalid size of IP packet " 3911 "(Number=%d / Length=%d). Discarded.\n", 3912 elements + extra_elems, skb->len); 3913 return 0; 3914 } 3915 return elements; 3916 } 3917 EXPORT_SYMBOL_GPL(qeth_get_elements_no); 3918 3919 int qeth_hdr_chk_and_bounce(struct sk_buff *skb, struct qeth_hdr **hdr, int len) 3920 { 3921 int hroom, inpage, rest; 3922 3923 if (((unsigned long)skb->data & PAGE_MASK) != 3924 (((unsigned long)skb->data + len - 1) & PAGE_MASK)) { 3925 hroom = skb_headroom(skb); 3926 inpage = PAGE_SIZE - ((unsigned long) skb->data % PAGE_SIZE); 3927 rest = len - inpage; 3928 if (rest > hroom) 3929 return 1; 3930 memmove(skb->data - rest, skb->data, skb_headlen(skb)); 3931 skb->data -= rest; 3932 skb->tail -= rest; 3933 *hdr = (struct qeth_hdr *)skb->data; 3934 QETH_DBF_MESSAGE(2, "skb bounce len: %d rest: %d\n", len, rest); 3935 } 3936 return 0; 3937 } 3938 EXPORT_SYMBOL_GPL(qeth_hdr_chk_and_bounce); 3939 3940 /** 3941 * qeth_push_hdr() - push a qeth_hdr onto an skb. 3942 * @skb: skb that the qeth_hdr should be pushed onto. 3943 * @hdr: double pointer to a qeth_hdr. When returning with >= 0, 3944 * it contains a valid pointer to a qeth_hdr. 3945 * @len: length of the hdr that needs to be pushed on. 3946 * 3947 * Returns the pushed length. If the header can't be pushed on 3948 * (eg. because it would cross a page boundary), it is allocated from 3949 * the cache instead and 0 is returned. 3950 * Error to create the hdr is indicated by returning with < 0. 3951 */ 3952 int qeth_push_hdr(struct sk_buff *skb, struct qeth_hdr **hdr, unsigned int len) 3953 { 3954 if (skb_headroom(skb) >= len && 3955 qeth_get_elements_for_range((addr_t)skb->data - len, 3956 (addr_t)skb->data) == 1) { 3957 *hdr = skb_push(skb, len); 3958 return len; 3959 } 3960 /* fall back */ 3961 *hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC); 3962 if (!*hdr) 3963 return -ENOMEM; 3964 return 0; 3965 } 3966 EXPORT_SYMBOL_GPL(qeth_push_hdr); 3967 3968 static void __qeth_fill_buffer(struct sk_buff *skb, 3969 struct qeth_qdio_out_buffer *buf, 3970 bool is_first_elem, unsigned int offset) 3971 { 3972 struct qdio_buffer *buffer = buf->buffer; 3973 int element = buf->next_element_to_fill; 3974 int length = skb_headlen(skb) - offset; 3975 char *data = skb->data + offset; 3976 int length_here, cnt; 3977 3978 /* map linear part into buffer element(s) */ 3979 while (length > 0) { 3980 /* length_here is the remaining amount of data in this page */ 3981 length_here = PAGE_SIZE - ((unsigned long) data % PAGE_SIZE); 3982 if (length < length_here) 3983 length_here = length; 3984 3985 buffer->element[element].addr = data; 3986 buffer->element[element].length = length_here; 3987 length -= length_here; 3988 if (is_first_elem) { 3989 is_first_elem = false; 3990 if (length || skb_is_nonlinear(skb)) 3991 /* skb needs additional elements */ 3992 buffer->element[element].eflags = 3993 SBAL_EFLAGS_FIRST_FRAG; 3994 else 3995 buffer->element[element].eflags = 0; 3996 } else { 3997 buffer->element[element].eflags = 3998 SBAL_EFLAGS_MIDDLE_FRAG; 3999 } 4000 data += length_here; 4001 element++; 4002 } 4003 4004 /* map page frags into buffer element(s) */ 4005 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) { 4006 skb_frag_t *frag = &skb_shinfo(skb)->frags[cnt]; 4007 4008 data = skb_frag_address(frag); 4009 length = skb_frag_size(frag); 4010 while (length > 0) { 4011 length_here = PAGE_SIZE - 4012 ((unsigned long) data % PAGE_SIZE); 4013 if (length < length_here) 4014 length_here = length; 4015 4016 buffer->element[element].addr = data; 4017 buffer->element[element].length = length_here; 4018 buffer->element[element].eflags = 4019 SBAL_EFLAGS_MIDDLE_FRAG; 4020 length -= length_here; 4021 data += length_here; 4022 element++; 4023 } 4024 } 4025 4026 if (buffer->element[element - 1].eflags) 4027 buffer->element[element - 1].eflags = SBAL_EFLAGS_LAST_FRAG; 4028 buf->next_element_to_fill = element; 4029 } 4030 4031 /** 4032 * qeth_fill_buffer() - map skb into an output buffer 4033 * @queue: QDIO queue to submit the buffer on 4034 * @buf: buffer to transport the skb 4035 * @skb: skb to map into the buffer 4036 * @hdr: qeth_hdr for this skb. Either at skb->data, or allocated 4037 * from qeth_core_header_cache. 4038 * @offset: when mapping the skb, start at skb->data + offset 4039 * @hd_len: if > 0, build a dedicated header element of this size 4040 */ 4041 static int qeth_fill_buffer(struct qeth_qdio_out_q *queue, 4042 struct qeth_qdio_out_buffer *buf, 4043 struct sk_buff *skb, struct qeth_hdr *hdr, 4044 unsigned int offset, unsigned int hd_len) 4045 { 4046 struct qdio_buffer *buffer = buf->buffer; 4047 bool is_first_elem = true; 4048 int flush_cnt = 0; 4049 4050 refcount_inc(&skb->users); 4051 skb_queue_tail(&buf->skb_list, skb); 4052 4053 /* build dedicated header element */ 4054 if (hd_len) { 4055 int element = buf->next_element_to_fill; 4056 is_first_elem = false; 4057 4058 buffer->element[element].addr = hdr; 4059 buffer->element[element].length = hd_len; 4060 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG; 4061 /* remember to free cache-allocated qeth_hdr: */ 4062 buf->is_header[element] = ((void *)hdr != skb->data); 4063 buf->next_element_to_fill++; 4064 } 4065 4066 __qeth_fill_buffer(skb, buf, is_first_elem, offset); 4067 4068 if (!queue->do_pack) { 4069 QETH_CARD_TEXT(queue->card, 6, "fillbfnp"); 4070 /* set state to PRIMED -> will be flushed */ 4071 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED); 4072 flush_cnt = 1; 4073 } else { 4074 QETH_CARD_TEXT(queue->card, 6, "fillbfpa"); 4075 if (queue->card->options.performance_stats) 4076 queue->card->perf_stats.skbs_sent_pack++; 4077 if (buf->next_element_to_fill >= 4078 QETH_MAX_BUFFER_ELEMENTS(queue->card)) { 4079 /* 4080 * packed buffer if full -> set state PRIMED 4081 * -> will be flushed 4082 */ 4083 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED); 4084 flush_cnt = 1; 4085 } 4086 } 4087 return flush_cnt; 4088 } 4089 4090 int qeth_do_send_packet_fast(struct qeth_qdio_out_q *queue, struct sk_buff *skb, 4091 struct qeth_hdr *hdr, unsigned int offset, 4092 unsigned int hd_len) 4093 { 4094 int index = queue->next_buf_to_fill; 4095 struct qeth_qdio_out_buffer *buffer = queue->bufs[index]; 4096 4097 /* 4098 * check if buffer is empty to make sure that we do not 'overtake' 4099 * ourselves and try to fill a buffer that is already primed 4100 */ 4101 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) 4102 return -EBUSY; 4103 queue->next_buf_to_fill = (index + 1) % QDIO_MAX_BUFFERS_PER_Q; 4104 qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len); 4105 qeth_flush_buffers(queue, index, 1); 4106 return 0; 4107 } 4108 EXPORT_SYMBOL_GPL(qeth_do_send_packet_fast); 4109 4110 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue, 4111 struct sk_buff *skb, struct qeth_hdr *hdr, 4112 unsigned int offset, unsigned int hd_len, 4113 int elements_needed) 4114 { 4115 struct qeth_qdio_out_buffer *buffer; 4116 int start_index; 4117 int flush_count = 0; 4118 int do_pack = 0; 4119 int tmp; 4120 int rc = 0; 4121 4122 /* spin until we get the queue ... */ 4123 while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED, 4124 QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED); 4125 start_index = queue->next_buf_to_fill; 4126 buffer = queue->bufs[queue->next_buf_to_fill]; 4127 /* 4128 * check if buffer is empty to make sure that we do not 'overtake' 4129 * ourselves and try to fill a buffer that is already primed 4130 */ 4131 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) { 4132 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED); 4133 return -EBUSY; 4134 } 4135 /* check if we need to switch packing state of this queue */ 4136 qeth_switch_to_packing_if_needed(queue); 4137 if (queue->do_pack) { 4138 do_pack = 1; 4139 /* does packet fit in current buffer? */ 4140 if ((QETH_MAX_BUFFER_ELEMENTS(card) - 4141 buffer->next_element_to_fill) < elements_needed) { 4142 /* ... no -> set state PRIMED */ 4143 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED); 4144 flush_count++; 4145 queue->next_buf_to_fill = 4146 (queue->next_buf_to_fill + 1) % 4147 QDIO_MAX_BUFFERS_PER_Q; 4148 buffer = queue->bufs[queue->next_buf_to_fill]; 4149 /* we did a step forward, so check buffer state 4150 * again */ 4151 if (atomic_read(&buffer->state) != 4152 QETH_QDIO_BUF_EMPTY) { 4153 qeth_flush_buffers(queue, start_index, 4154 flush_count); 4155 atomic_set(&queue->state, 4156 QETH_OUT_Q_UNLOCKED); 4157 rc = -EBUSY; 4158 goto out; 4159 } 4160 } 4161 } 4162 tmp = qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len); 4163 queue->next_buf_to_fill = (queue->next_buf_to_fill + tmp) % 4164 QDIO_MAX_BUFFERS_PER_Q; 4165 flush_count += tmp; 4166 if (flush_count) 4167 qeth_flush_buffers(queue, start_index, flush_count); 4168 else if (!atomic_read(&queue->set_pci_flags_count)) 4169 atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH); 4170 /* 4171 * queue->state will go from LOCKED -> UNLOCKED or from 4172 * LOCKED_FLUSH -> LOCKED if output_handler wanted to 'notify' us 4173 * (switch packing state or flush buffer to get another pci flag out). 4174 * In that case we will enter this loop 4175 */ 4176 while (atomic_dec_return(&queue->state)) { 4177 start_index = queue->next_buf_to_fill; 4178 /* check if we can go back to non-packing state */ 4179 tmp = qeth_switch_to_nonpacking_if_needed(queue); 4180 /* 4181 * check if we need to flush a packing buffer to get a pci 4182 * flag out on the queue 4183 */ 4184 if (!tmp && !atomic_read(&queue->set_pci_flags_count)) 4185 tmp = qeth_prep_flush_pack_buffer(queue); 4186 if (tmp) { 4187 qeth_flush_buffers(queue, start_index, tmp); 4188 flush_count += tmp; 4189 } 4190 } 4191 out: 4192 /* at this point the queue is UNLOCKED again */ 4193 if (queue->card->options.performance_stats && do_pack) 4194 queue->card->perf_stats.bufs_sent_pack += flush_count; 4195 4196 return rc; 4197 } 4198 EXPORT_SYMBOL_GPL(qeth_do_send_packet); 4199 4200 static int qeth_setadp_promisc_mode_cb(struct qeth_card *card, 4201 struct qeth_reply *reply, unsigned long data) 4202 { 4203 struct qeth_ipa_cmd *cmd; 4204 struct qeth_ipacmd_setadpparms *setparms; 4205 4206 QETH_CARD_TEXT(card, 4, "prmadpcb"); 4207 4208 cmd = (struct qeth_ipa_cmd *) data; 4209 setparms = &(cmd->data.setadapterparms); 4210 4211 qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd); 4212 if (cmd->hdr.return_code) { 4213 QETH_CARD_TEXT_(card, 4, "prmrc%x", cmd->hdr.return_code); 4214 setparms->data.mode = SET_PROMISC_MODE_OFF; 4215 } 4216 card->info.promisc_mode = setparms->data.mode; 4217 return 0; 4218 } 4219 4220 void qeth_setadp_promisc_mode(struct qeth_card *card) 4221 { 4222 enum qeth_ipa_promisc_modes mode; 4223 struct net_device *dev = card->dev; 4224 struct qeth_cmd_buffer *iob; 4225 struct qeth_ipa_cmd *cmd; 4226 4227 QETH_CARD_TEXT(card, 4, "setprom"); 4228 4229 if (((dev->flags & IFF_PROMISC) && 4230 (card->info.promisc_mode == SET_PROMISC_MODE_ON)) || 4231 (!(dev->flags & IFF_PROMISC) && 4232 (card->info.promisc_mode == SET_PROMISC_MODE_OFF))) 4233 return; 4234 mode = SET_PROMISC_MODE_OFF; 4235 if (dev->flags & IFF_PROMISC) 4236 mode = SET_PROMISC_MODE_ON; 4237 QETH_CARD_TEXT_(card, 4, "mode:%x", mode); 4238 4239 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE, 4240 sizeof(struct qeth_ipacmd_setadpparms_hdr) + 8); 4241 if (!iob) 4242 return; 4243 cmd = (struct qeth_ipa_cmd *)(iob->data + IPA_PDU_HEADER_SIZE); 4244 cmd->data.setadapterparms.data.mode = mode; 4245 qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL); 4246 } 4247 EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode); 4248 4249 int qeth_change_mtu(struct net_device *dev, int new_mtu) 4250 { 4251 struct qeth_card *card; 4252 char dbf_text[15]; 4253 4254 card = dev->ml_priv; 4255 4256 QETH_CARD_TEXT(card, 4, "chgmtu"); 4257 sprintf(dbf_text, "%8x", new_mtu); 4258 QETH_CARD_TEXT(card, 4, dbf_text); 4259 4260 if (!qeth_mtu_is_valid(card, new_mtu)) 4261 return -EINVAL; 4262 dev->mtu = new_mtu; 4263 return 0; 4264 } 4265 EXPORT_SYMBOL_GPL(qeth_change_mtu); 4266 4267 struct net_device_stats *qeth_get_stats(struct net_device *dev) 4268 { 4269 struct qeth_card *card; 4270 4271 card = dev->ml_priv; 4272 4273 QETH_CARD_TEXT(card, 5, "getstat"); 4274 4275 return &card->stats; 4276 } 4277 EXPORT_SYMBOL_GPL(qeth_get_stats); 4278 4279 static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card, 4280 struct qeth_reply *reply, unsigned long data) 4281 { 4282 struct qeth_ipa_cmd *cmd; 4283 4284 QETH_CARD_TEXT(card, 4, "chgmaccb"); 4285 4286 cmd = (struct qeth_ipa_cmd *) data; 4287 if (!card->options.layer2 || 4288 !(card->info.mac_bits & QETH_LAYER2_MAC_READ)) { 4289 ether_addr_copy(card->dev->dev_addr, 4290 cmd->data.setadapterparms.data.change_addr.addr); 4291 card->info.mac_bits |= QETH_LAYER2_MAC_READ; 4292 } 4293 qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd); 4294 return 0; 4295 } 4296 4297 int qeth_setadpparms_change_macaddr(struct qeth_card *card) 4298 { 4299 int rc; 4300 struct qeth_cmd_buffer *iob; 4301 struct qeth_ipa_cmd *cmd; 4302 4303 QETH_CARD_TEXT(card, 4, "chgmac"); 4304 4305 iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS, 4306 sizeof(struct qeth_ipacmd_setadpparms_hdr) + 4307 sizeof(struct qeth_change_addr)); 4308 if (!iob) 4309 return -ENOMEM; 4310 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 4311 cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC; 4312 cmd->data.setadapterparms.data.change_addr.addr_size = ETH_ALEN; 4313 ether_addr_copy(cmd->data.setadapterparms.data.change_addr.addr, 4314 card->dev->dev_addr); 4315 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb, 4316 NULL); 4317 return rc; 4318 } 4319 EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr); 4320 4321 static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card, 4322 struct qeth_reply *reply, unsigned long data) 4323 { 4324 struct qeth_ipa_cmd *cmd; 4325 struct qeth_set_access_ctrl *access_ctrl_req; 4326 int fallback = *(int *)reply->param; 4327 4328 QETH_CARD_TEXT(card, 4, "setaccb"); 4329 4330 cmd = (struct qeth_ipa_cmd *) data; 4331 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl; 4332 QETH_DBF_TEXT_(SETUP, 2, "setaccb"); 4333 QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name); 4334 QETH_DBF_TEXT_(SETUP, 2, "rc=%d", 4335 cmd->data.setadapterparms.hdr.return_code); 4336 if (cmd->data.setadapterparms.hdr.return_code != 4337 SET_ACCESS_CTRL_RC_SUCCESS) 4338 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%s,%d)==%d\n", 4339 card->gdev->dev.kobj.name, 4340 access_ctrl_req->subcmd_code, 4341 cmd->data.setadapterparms.hdr.return_code); 4342 switch (cmd->data.setadapterparms.hdr.return_code) { 4343 case SET_ACCESS_CTRL_RC_SUCCESS: 4344 if (card->options.isolation == ISOLATION_MODE_NONE) { 4345 dev_info(&card->gdev->dev, 4346 "QDIO data connection isolation is deactivated\n"); 4347 } else { 4348 dev_info(&card->gdev->dev, 4349 "QDIO data connection isolation is activated\n"); 4350 } 4351 break; 4352 case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED: 4353 QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already " 4354 "deactivated\n", dev_name(&card->gdev->dev)); 4355 if (fallback) 4356 card->options.isolation = card->options.prev_isolation; 4357 break; 4358 case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED: 4359 QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already" 4360 " activated\n", dev_name(&card->gdev->dev)); 4361 if (fallback) 4362 card->options.isolation = card->options.prev_isolation; 4363 break; 4364 case SET_ACCESS_CTRL_RC_NOT_SUPPORTED: 4365 dev_err(&card->gdev->dev, "Adapter does not " 4366 "support QDIO data connection isolation\n"); 4367 break; 4368 case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER: 4369 dev_err(&card->gdev->dev, 4370 "Adapter is dedicated. " 4371 "QDIO data connection isolation not supported\n"); 4372 if (fallback) 4373 card->options.isolation = card->options.prev_isolation; 4374 break; 4375 case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF: 4376 dev_err(&card->gdev->dev, 4377 "TSO does not permit QDIO data connection isolation\n"); 4378 if (fallback) 4379 card->options.isolation = card->options.prev_isolation; 4380 break; 4381 case SET_ACCESS_CTRL_RC_REFLREL_UNSUPPORTED: 4382 dev_err(&card->gdev->dev, "The adjacent switch port does not " 4383 "support reflective relay mode\n"); 4384 if (fallback) 4385 card->options.isolation = card->options.prev_isolation; 4386 break; 4387 case SET_ACCESS_CTRL_RC_REFLREL_FAILED: 4388 dev_err(&card->gdev->dev, "The reflective relay mode cannot be " 4389 "enabled at the adjacent switch port"); 4390 if (fallback) 4391 card->options.isolation = card->options.prev_isolation; 4392 break; 4393 case SET_ACCESS_CTRL_RC_REFLREL_DEACT_FAILED: 4394 dev_warn(&card->gdev->dev, "Turning off reflective relay mode " 4395 "at the adjacent switch failed\n"); 4396 break; 4397 default: 4398 /* this should never happen */ 4399 if (fallback) 4400 card->options.isolation = card->options.prev_isolation; 4401 break; 4402 } 4403 qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd); 4404 return 0; 4405 } 4406 4407 static int qeth_setadpparms_set_access_ctrl(struct qeth_card *card, 4408 enum qeth_ipa_isolation_modes isolation, int fallback) 4409 { 4410 int rc; 4411 struct qeth_cmd_buffer *iob; 4412 struct qeth_ipa_cmd *cmd; 4413 struct qeth_set_access_ctrl *access_ctrl_req; 4414 4415 QETH_CARD_TEXT(card, 4, "setacctl"); 4416 4417 QETH_DBF_TEXT_(SETUP, 2, "setacctl"); 4418 QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name); 4419 4420 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL, 4421 sizeof(struct qeth_ipacmd_setadpparms_hdr) + 4422 sizeof(struct qeth_set_access_ctrl)); 4423 if (!iob) 4424 return -ENOMEM; 4425 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 4426 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl; 4427 access_ctrl_req->subcmd_code = isolation; 4428 4429 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_set_access_ctrl_cb, 4430 &fallback); 4431 QETH_DBF_TEXT_(SETUP, 2, "rc=%d", rc); 4432 return rc; 4433 } 4434 4435 int qeth_set_access_ctrl_online(struct qeth_card *card, int fallback) 4436 { 4437 int rc = 0; 4438 4439 QETH_CARD_TEXT(card, 4, "setactlo"); 4440 4441 if ((card->info.type == QETH_CARD_TYPE_OSD || 4442 card->info.type == QETH_CARD_TYPE_OSX) && 4443 qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) { 4444 rc = qeth_setadpparms_set_access_ctrl(card, 4445 card->options.isolation, fallback); 4446 if (rc) { 4447 QETH_DBF_MESSAGE(3, 4448 "IPA(SET_ACCESS_CTRL,%s,%d) sent failed\n", 4449 card->gdev->dev.kobj.name, 4450 rc); 4451 rc = -EOPNOTSUPP; 4452 } 4453 } else if (card->options.isolation != ISOLATION_MODE_NONE) { 4454 card->options.isolation = ISOLATION_MODE_NONE; 4455 4456 dev_err(&card->gdev->dev, "Adapter does not " 4457 "support QDIO data connection isolation\n"); 4458 rc = -EOPNOTSUPP; 4459 } 4460 return rc; 4461 } 4462 EXPORT_SYMBOL_GPL(qeth_set_access_ctrl_online); 4463 4464 void qeth_tx_timeout(struct net_device *dev) 4465 { 4466 struct qeth_card *card; 4467 4468 card = dev->ml_priv; 4469 QETH_CARD_TEXT(card, 4, "txtimeo"); 4470 card->stats.tx_errors++; 4471 qeth_schedule_recovery(card); 4472 } 4473 EXPORT_SYMBOL_GPL(qeth_tx_timeout); 4474 4475 static int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum) 4476 { 4477 struct qeth_card *card = dev->ml_priv; 4478 int rc = 0; 4479 4480 switch (regnum) { 4481 case MII_BMCR: /* Basic mode control register */ 4482 rc = BMCR_FULLDPLX; 4483 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) && 4484 (card->info.link_type != QETH_LINK_TYPE_OSN) && 4485 (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH)) 4486 rc |= BMCR_SPEED100; 4487 break; 4488 case MII_BMSR: /* Basic mode status register */ 4489 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS | 4490 BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL | 4491 BMSR_100BASE4; 4492 break; 4493 case MII_PHYSID1: /* PHYS ID 1 */ 4494 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) | 4495 dev->dev_addr[2]; 4496 rc = (rc >> 5) & 0xFFFF; 4497 break; 4498 case MII_PHYSID2: /* PHYS ID 2 */ 4499 rc = (dev->dev_addr[2] << 10) & 0xFFFF; 4500 break; 4501 case MII_ADVERTISE: /* Advertisement control reg */ 4502 rc = ADVERTISE_ALL; 4503 break; 4504 case MII_LPA: /* Link partner ability reg */ 4505 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL | 4506 LPA_100BASE4 | LPA_LPACK; 4507 break; 4508 case MII_EXPANSION: /* Expansion register */ 4509 break; 4510 case MII_DCOUNTER: /* disconnect counter */ 4511 break; 4512 case MII_FCSCOUNTER: /* false carrier counter */ 4513 break; 4514 case MII_NWAYTEST: /* N-way auto-neg test register */ 4515 break; 4516 case MII_RERRCOUNTER: /* rx error counter */ 4517 rc = card->stats.rx_errors; 4518 break; 4519 case MII_SREVISION: /* silicon revision */ 4520 break; 4521 case MII_RESV1: /* reserved 1 */ 4522 break; 4523 case MII_LBRERROR: /* loopback, rx, bypass error */ 4524 break; 4525 case MII_PHYADDR: /* physical address */ 4526 break; 4527 case MII_RESV2: /* reserved 2 */ 4528 break; 4529 case MII_TPISTATUS: /* TPI status for 10mbps */ 4530 break; 4531 case MII_NCONFIG: /* network interface config */ 4532 break; 4533 default: 4534 break; 4535 } 4536 return rc; 4537 } 4538 4539 static int qeth_send_ipa_snmp_cmd(struct qeth_card *card, 4540 struct qeth_cmd_buffer *iob, int len, 4541 int (*reply_cb)(struct qeth_card *, struct qeth_reply *, 4542 unsigned long), 4543 void *reply_param) 4544 { 4545 u16 s1, s2; 4546 4547 QETH_CARD_TEXT(card, 4, "sendsnmp"); 4548 4549 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE); 4550 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data), 4551 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH); 4552 /* adjust PDU length fields in IPA_PDU_HEADER */ 4553 s1 = (u32) IPA_PDU_HEADER_SIZE + len; 4554 s2 = (u32) len; 4555 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2); 4556 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2); 4557 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2); 4558 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2); 4559 return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob, 4560 reply_cb, reply_param); 4561 } 4562 4563 static int qeth_snmp_command_cb(struct qeth_card *card, 4564 struct qeth_reply *reply, unsigned long sdata) 4565 { 4566 struct qeth_ipa_cmd *cmd; 4567 struct qeth_arp_query_info *qinfo; 4568 struct qeth_snmp_cmd *snmp; 4569 unsigned char *data; 4570 __u16 data_len; 4571 4572 QETH_CARD_TEXT(card, 3, "snpcmdcb"); 4573 4574 cmd = (struct qeth_ipa_cmd *) sdata; 4575 data = (unsigned char *)((char *)cmd - reply->offset); 4576 qinfo = (struct qeth_arp_query_info *) reply->param; 4577 snmp = &cmd->data.setadapterparms.data.snmp; 4578 4579 if (cmd->hdr.return_code) { 4580 QETH_CARD_TEXT_(card, 4, "scer1%x", cmd->hdr.return_code); 4581 return 0; 4582 } 4583 if (cmd->data.setadapterparms.hdr.return_code) { 4584 cmd->hdr.return_code = 4585 cmd->data.setadapterparms.hdr.return_code; 4586 QETH_CARD_TEXT_(card, 4, "scer2%x", cmd->hdr.return_code); 4587 return 0; 4588 } 4589 data_len = *((__u16 *)QETH_IPA_PDU_LEN_PDU1(data)); 4590 if (cmd->data.setadapterparms.hdr.seq_no == 1) 4591 data_len -= (__u16)((char *)&snmp->data - (char *)cmd); 4592 else 4593 data_len -= (__u16)((char *)&snmp->request - (char *)cmd); 4594 4595 /* check if there is enough room in userspace */ 4596 if ((qinfo->udata_len - qinfo->udata_offset) < data_len) { 4597 QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOMEM); 4598 cmd->hdr.return_code = IPA_RC_ENOMEM; 4599 return 0; 4600 } 4601 QETH_CARD_TEXT_(card, 4, "snore%i", 4602 cmd->data.setadapterparms.hdr.used_total); 4603 QETH_CARD_TEXT_(card, 4, "sseqn%i", 4604 cmd->data.setadapterparms.hdr.seq_no); 4605 /*copy entries to user buffer*/ 4606 if (cmd->data.setadapterparms.hdr.seq_no == 1) { 4607 memcpy(qinfo->udata + qinfo->udata_offset, 4608 (char *)snmp, 4609 data_len + offsetof(struct qeth_snmp_cmd, data)); 4610 qinfo->udata_offset += offsetof(struct qeth_snmp_cmd, data); 4611 } else { 4612 memcpy(qinfo->udata + qinfo->udata_offset, 4613 (char *)&snmp->request, data_len); 4614 } 4615 qinfo->udata_offset += data_len; 4616 /* check if all replies received ... */ 4617 QETH_CARD_TEXT_(card, 4, "srtot%i", 4618 cmd->data.setadapterparms.hdr.used_total); 4619 QETH_CARD_TEXT_(card, 4, "srseq%i", 4620 cmd->data.setadapterparms.hdr.seq_no); 4621 if (cmd->data.setadapterparms.hdr.seq_no < 4622 cmd->data.setadapterparms.hdr.used_total) 4623 return 1; 4624 return 0; 4625 } 4626 4627 static int qeth_snmp_command(struct qeth_card *card, char __user *udata) 4628 { 4629 struct qeth_cmd_buffer *iob; 4630 struct qeth_ipa_cmd *cmd; 4631 struct qeth_snmp_ureq *ureq; 4632 unsigned int req_len; 4633 struct qeth_arp_query_info qinfo = {0, }; 4634 int rc = 0; 4635 4636 QETH_CARD_TEXT(card, 3, "snmpcmd"); 4637 4638 if (card->info.guestlan) 4639 return -EOPNOTSUPP; 4640 4641 if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) && 4642 (!card->options.layer2)) { 4643 return -EOPNOTSUPP; 4644 } 4645 /* skip 4 bytes (data_len struct member) to get req_len */ 4646 if (copy_from_user(&req_len, udata + sizeof(int), sizeof(int))) 4647 return -EFAULT; 4648 if (req_len > (QETH_BUFSIZE - IPA_PDU_HEADER_SIZE - 4649 sizeof(struct qeth_ipacmd_hdr) - 4650 sizeof(struct qeth_ipacmd_setadpparms_hdr))) 4651 return -EINVAL; 4652 ureq = memdup_user(udata, req_len + sizeof(struct qeth_snmp_ureq_hdr)); 4653 if (IS_ERR(ureq)) { 4654 QETH_CARD_TEXT(card, 2, "snmpnome"); 4655 return PTR_ERR(ureq); 4656 } 4657 qinfo.udata_len = ureq->hdr.data_len; 4658 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL); 4659 if (!qinfo.udata) { 4660 kfree(ureq); 4661 return -ENOMEM; 4662 } 4663 qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr); 4664 4665 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL, 4666 QETH_SNMP_SETADP_CMDLENGTH + req_len); 4667 if (!iob) { 4668 rc = -ENOMEM; 4669 goto out; 4670 } 4671 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 4672 memcpy(&cmd->data.setadapterparms.data.snmp, &ureq->cmd, req_len); 4673 rc = qeth_send_ipa_snmp_cmd(card, iob, QETH_SETADP_BASE_LEN + req_len, 4674 qeth_snmp_command_cb, (void *)&qinfo); 4675 if (rc) 4676 QETH_DBF_MESSAGE(2, "SNMP command failed on %s: (0x%x)\n", 4677 QETH_CARD_IFNAME(card), rc); 4678 else { 4679 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len)) 4680 rc = -EFAULT; 4681 } 4682 out: 4683 kfree(ureq); 4684 kfree(qinfo.udata); 4685 return rc; 4686 } 4687 4688 static int qeth_setadpparms_query_oat_cb(struct qeth_card *card, 4689 struct qeth_reply *reply, unsigned long data) 4690 { 4691 struct qeth_ipa_cmd *cmd; 4692 struct qeth_qoat_priv *priv; 4693 char *resdata; 4694 int resdatalen; 4695 4696 QETH_CARD_TEXT(card, 3, "qoatcb"); 4697 4698 cmd = (struct qeth_ipa_cmd *)data; 4699 priv = (struct qeth_qoat_priv *)reply->param; 4700 resdatalen = cmd->data.setadapterparms.hdr.cmdlength; 4701 resdata = (char *)data + 28; 4702 4703 if (resdatalen > (priv->buffer_len - priv->response_len)) { 4704 cmd->hdr.return_code = IPA_RC_FFFF; 4705 return 0; 4706 } 4707 4708 memcpy((priv->buffer + priv->response_len), resdata, 4709 resdatalen); 4710 priv->response_len += resdatalen; 4711 4712 if (cmd->data.setadapterparms.hdr.seq_no < 4713 cmd->data.setadapterparms.hdr.used_total) 4714 return 1; 4715 return 0; 4716 } 4717 4718 static int qeth_query_oat_command(struct qeth_card *card, char __user *udata) 4719 { 4720 int rc = 0; 4721 struct qeth_cmd_buffer *iob; 4722 struct qeth_ipa_cmd *cmd; 4723 struct qeth_query_oat *oat_req; 4724 struct qeth_query_oat_data oat_data; 4725 struct qeth_qoat_priv priv; 4726 void __user *tmp; 4727 4728 QETH_CARD_TEXT(card, 3, "qoatcmd"); 4729 4730 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_OAT)) { 4731 rc = -EOPNOTSUPP; 4732 goto out; 4733 } 4734 4735 if (copy_from_user(&oat_data, udata, 4736 sizeof(struct qeth_query_oat_data))) { 4737 rc = -EFAULT; 4738 goto out; 4739 } 4740 4741 priv.buffer_len = oat_data.buffer_len; 4742 priv.response_len = 0; 4743 priv.buffer = kzalloc(oat_data.buffer_len, GFP_KERNEL); 4744 if (!priv.buffer) { 4745 rc = -ENOMEM; 4746 goto out; 4747 } 4748 4749 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT, 4750 sizeof(struct qeth_ipacmd_setadpparms_hdr) + 4751 sizeof(struct qeth_query_oat)); 4752 if (!iob) { 4753 rc = -ENOMEM; 4754 goto out_free; 4755 } 4756 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 4757 oat_req = &cmd->data.setadapterparms.data.query_oat; 4758 oat_req->subcmd_code = oat_data.command; 4759 4760 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_query_oat_cb, 4761 &priv); 4762 if (!rc) { 4763 if (is_compat_task()) 4764 tmp = compat_ptr(oat_data.ptr); 4765 else 4766 tmp = (void __user *)(unsigned long)oat_data.ptr; 4767 4768 if (copy_to_user(tmp, priv.buffer, 4769 priv.response_len)) { 4770 rc = -EFAULT; 4771 goto out_free; 4772 } 4773 4774 oat_data.response_len = priv.response_len; 4775 4776 if (copy_to_user(udata, &oat_data, 4777 sizeof(struct qeth_query_oat_data))) 4778 rc = -EFAULT; 4779 } else 4780 if (rc == IPA_RC_FFFF) 4781 rc = -EFAULT; 4782 4783 out_free: 4784 kfree(priv.buffer); 4785 out: 4786 return rc; 4787 } 4788 4789 static int qeth_query_card_info_cb(struct qeth_card *card, 4790 struct qeth_reply *reply, unsigned long data) 4791 { 4792 struct qeth_ipa_cmd *cmd; 4793 struct qeth_query_card_info *card_info; 4794 struct carrier_info *carrier_info; 4795 4796 QETH_CARD_TEXT(card, 2, "qcrdincb"); 4797 carrier_info = (struct carrier_info *)reply->param; 4798 cmd = (struct qeth_ipa_cmd *)data; 4799 card_info = &cmd->data.setadapterparms.data.card_info; 4800 if (cmd->data.setadapterparms.hdr.return_code == 0) { 4801 carrier_info->card_type = card_info->card_type; 4802 carrier_info->port_mode = card_info->port_mode; 4803 carrier_info->port_speed = card_info->port_speed; 4804 } 4805 4806 qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd); 4807 return 0; 4808 } 4809 4810 static int qeth_query_card_info(struct qeth_card *card, 4811 struct carrier_info *carrier_info) 4812 { 4813 struct qeth_cmd_buffer *iob; 4814 4815 QETH_CARD_TEXT(card, 2, "qcrdinfo"); 4816 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_CARD_INFO)) 4817 return -EOPNOTSUPP; 4818 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_CARD_INFO, 4819 sizeof(struct qeth_ipacmd_setadpparms_hdr)); 4820 if (!iob) 4821 return -ENOMEM; 4822 return qeth_send_ipa_cmd(card, iob, qeth_query_card_info_cb, 4823 (void *)carrier_info); 4824 } 4825 4826 /** 4827 * qeth_vm_request_mac() - Request a hypervisor-managed MAC address 4828 * @card: pointer to a qeth_card 4829 * 4830 * Returns 4831 * 0, if a MAC address has been set for the card's netdevice 4832 * a return code, for various error conditions 4833 */ 4834 int qeth_vm_request_mac(struct qeth_card *card) 4835 { 4836 struct diag26c_mac_resp *response; 4837 struct diag26c_mac_req *request; 4838 struct ccw_dev_id id; 4839 int rc; 4840 4841 QETH_DBF_TEXT(SETUP, 2, "vmreqmac"); 4842 4843 if (!card->dev) 4844 return -ENODEV; 4845 4846 request = kzalloc(sizeof(*request), GFP_KERNEL | GFP_DMA); 4847 response = kzalloc(sizeof(*response), GFP_KERNEL | GFP_DMA); 4848 if (!request || !response) { 4849 rc = -ENOMEM; 4850 goto out; 4851 } 4852 4853 ccw_device_get_id(CARD_DDEV(card), &id); 4854 request->resp_buf_len = sizeof(*response); 4855 request->resp_version = DIAG26C_VERSION2; 4856 request->op_code = DIAG26C_GET_MAC; 4857 request->devno = id.devno; 4858 4859 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request)); 4860 rc = diag26c(request, response, DIAG26C_MAC_SERVICES); 4861 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request)); 4862 if (rc) 4863 goto out; 4864 QETH_DBF_HEX(CTRL, 2, response, sizeof(*response)); 4865 4866 if (request->resp_buf_len < sizeof(*response) || 4867 response->version != request->resp_version) { 4868 rc = -EIO; 4869 QETH_DBF_TEXT(SETUP, 2, "badresp"); 4870 QETH_DBF_HEX(SETUP, 2, &request->resp_buf_len, 4871 sizeof(request->resp_buf_len)); 4872 } else if (!is_valid_ether_addr(response->mac)) { 4873 rc = -EINVAL; 4874 QETH_DBF_TEXT(SETUP, 2, "badmac"); 4875 QETH_DBF_HEX(SETUP, 2, response->mac, ETH_ALEN); 4876 } else { 4877 ether_addr_copy(card->dev->dev_addr, response->mac); 4878 } 4879 4880 out: 4881 kfree(response); 4882 kfree(request); 4883 return rc; 4884 } 4885 EXPORT_SYMBOL_GPL(qeth_vm_request_mac); 4886 4887 static int qeth_get_qdio_q_format(struct qeth_card *card) 4888 { 4889 if (card->info.type == QETH_CARD_TYPE_IQD) 4890 return QDIO_IQDIO_QFMT; 4891 else 4892 return QDIO_QETH_QFMT; 4893 } 4894 4895 static void qeth_determine_capabilities(struct qeth_card *card) 4896 { 4897 int rc; 4898 int length; 4899 char *prcd; 4900 struct ccw_device *ddev; 4901 int ddev_offline = 0; 4902 4903 QETH_DBF_TEXT(SETUP, 2, "detcapab"); 4904 ddev = CARD_DDEV(card); 4905 if (!ddev->online) { 4906 ddev_offline = 1; 4907 rc = ccw_device_set_online(ddev); 4908 if (rc) { 4909 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc); 4910 goto out; 4911 } 4912 } 4913 4914 rc = qeth_read_conf_data(card, (void **) &prcd, &length); 4915 if (rc) { 4916 QETH_DBF_MESSAGE(2, "%s qeth_read_conf_data returned %i\n", 4917 dev_name(&card->gdev->dev), rc); 4918 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc); 4919 goto out_offline; 4920 } 4921 qeth_configure_unitaddr(card, prcd); 4922 if (ddev_offline) 4923 qeth_configure_blkt_default(card, prcd); 4924 kfree(prcd); 4925 4926 rc = qdio_get_ssqd_desc(ddev, &card->ssqd); 4927 if (rc) 4928 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc); 4929 4930 QETH_DBF_TEXT_(SETUP, 2, "qfmt%d", card->ssqd.qfmt); 4931 QETH_DBF_TEXT_(SETUP, 2, "ac1:%02x", card->ssqd.qdioac1); 4932 QETH_DBF_TEXT_(SETUP, 2, "ac2:%04x", card->ssqd.qdioac2); 4933 QETH_DBF_TEXT_(SETUP, 2, "ac3:%04x", card->ssqd.qdioac3); 4934 QETH_DBF_TEXT_(SETUP, 2, "icnt%d", card->ssqd.icnt); 4935 if (!((card->ssqd.qfmt != QDIO_IQDIO_QFMT) || 4936 ((card->ssqd.qdioac1 & CHSC_AC1_INITIATE_INPUTQ) == 0) || 4937 ((card->ssqd.qdioac3 & CHSC_AC3_FORMAT2_CQ_AVAILABLE) == 0))) { 4938 dev_info(&card->gdev->dev, 4939 "Completion Queueing supported\n"); 4940 } else { 4941 card->options.cq = QETH_CQ_NOTAVAILABLE; 4942 } 4943 4944 4945 out_offline: 4946 if (ddev_offline == 1) 4947 ccw_device_set_offline(ddev); 4948 out: 4949 return; 4950 } 4951 4952 static void qeth_qdio_establish_cq(struct qeth_card *card, 4953 struct qdio_buffer **in_sbal_ptrs, 4954 void (**queue_start_poll) 4955 (struct ccw_device *, int, 4956 unsigned long)) 4957 { 4958 int i; 4959 4960 if (card->options.cq == QETH_CQ_ENABLED) { 4961 int offset = QDIO_MAX_BUFFERS_PER_Q * 4962 (card->qdio.no_in_queues - 1); 4963 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) { 4964 in_sbal_ptrs[offset + i] = (struct qdio_buffer *) 4965 virt_to_phys(card->qdio.c_q->bufs[i].buffer); 4966 } 4967 4968 queue_start_poll[card->qdio.no_in_queues - 1] = NULL; 4969 } 4970 } 4971 4972 static int qeth_qdio_establish(struct qeth_card *card) 4973 { 4974 struct qdio_initialize init_data; 4975 char *qib_param_field; 4976 struct qdio_buffer **in_sbal_ptrs; 4977 void (**queue_start_poll) (struct ccw_device *, int, unsigned long); 4978 struct qdio_buffer **out_sbal_ptrs; 4979 int i, j, k; 4980 int rc = 0; 4981 4982 QETH_DBF_TEXT(SETUP, 2, "qdioest"); 4983 4984 qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(char), 4985 GFP_KERNEL); 4986 if (!qib_param_field) { 4987 rc = -ENOMEM; 4988 goto out_free_nothing; 4989 } 4990 4991 qeth_create_qib_param_field(card, qib_param_field); 4992 qeth_create_qib_param_field_blkt(card, qib_param_field); 4993 4994 in_sbal_ptrs = kzalloc(card->qdio.no_in_queues * 4995 QDIO_MAX_BUFFERS_PER_Q * sizeof(void *), 4996 GFP_KERNEL); 4997 if (!in_sbal_ptrs) { 4998 rc = -ENOMEM; 4999 goto out_free_qib_param; 5000 } 5001 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) { 5002 in_sbal_ptrs[i] = (struct qdio_buffer *) 5003 virt_to_phys(card->qdio.in_q->bufs[i].buffer); 5004 } 5005 5006 queue_start_poll = kzalloc(sizeof(void *) * card->qdio.no_in_queues, 5007 GFP_KERNEL); 5008 if (!queue_start_poll) { 5009 rc = -ENOMEM; 5010 goto out_free_in_sbals; 5011 } 5012 for (i = 0; i < card->qdio.no_in_queues; ++i) 5013 queue_start_poll[i] = card->discipline->start_poll; 5014 5015 qeth_qdio_establish_cq(card, in_sbal_ptrs, queue_start_poll); 5016 5017 out_sbal_ptrs = 5018 kzalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q * 5019 sizeof(void *), GFP_KERNEL); 5020 if (!out_sbal_ptrs) { 5021 rc = -ENOMEM; 5022 goto out_free_queue_start_poll; 5023 } 5024 for (i = 0, k = 0; i < card->qdio.no_out_queues; ++i) 5025 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j, ++k) { 5026 out_sbal_ptrs[k] = (struct qdio_buffer *)virt_to_phys( 5027 card->qdio.out_qs[i]->bufs[j]->buffer); 5028 } 5029 5030 memset(&init_data, 0, sizeof(struct qdio_initialize)); 5031 init_data.cdev = CARD_DDEV(card); 5032 init_data.q_format = qeth_get_qdio_q_format(card); 5033 init_data.qib_param_field_format = 0; 5034 init_data.qib_param_field = qib_param_field; 5035 init_data.no_input_qs = card->qdio.no_in_queues; 5036 init_data.no_output_qs = card->qdio.no_out_queues; 5037 init_data.input_handler = card->discipline->input_handler; 5038 init_data.output_handler = card->discipline->output_handler; 5039 init_data.queue_start_poll_array = queue_start_poll; 5040 init_data.int_parm = (unsigned long) card; 5041 init_data.input_sbal_addr_array = (void **) in_sbal_ptrs; 5042 init_data.output_sbal_addr_array = (void **) out_sbal_ptrs; 5043 init_data.output_sbal_state_array = card->qdio.out_bufstates; 5044 init_data.scan_threshold = 5045 (card->info.type == QETH_CARD_TYPE_IQD) ? 1 : 32; 5046 5047 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED, 5048 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) { 5049 rc = qdio_allocate(&init_data); 5050 if (rc) { 5051 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED); 5052 goto out; 5053 } 5054 rc = qdio_establish(&init_data); 5055 if (rc) { 5056 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED); 5057 qdio_free(CARD_DDEV(card)); 5058 } 5059 } 5060 5061 switch (card->options.cq) { 5062 case QETH_CQ_ENABLED: 5063 dev_info(&card->gdev->dev, "Completion Queue support enabled"); 5064 break; 5065 case QETH_CQ_DISABLED: 5066 dev_info(&card->gdev->dev, "Completion Queue support disabled"); 5067 break; 5068 default: 5069 break; 5070 } 5071 out: 5072 kfree(out_sbal_ptrs); 5073 out_free_queue_start_poll: 5074 kfree(queue_start_poll); 5075 out_free_in_sbals: 5076 kfree(in_sbal_ptrs); 5077 out_free_qib_param: 5078 kfree(qib_param_field); 5079 out_free_nothing: 5080 return rc; 5081 } 5082 5083 static void qeth_core_free_card(struct qeth_card *card) 5084 { 5085 5086 QETH_DBF_TEXT(SETUP, 2, "freecrd"); 5087 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 5088 qeth_clean_channel(&card->read); 5089 qeth_clean_channel(&card->write); 5090 if (card->dev) 5091 free_netdev(card->dev); 5092 qeth_free_qdio_buffers(card); 5093 unregister_service_level(&card->qeth_service_level); 5094 kfree(card); 5095 } 5096 5097 void qeth_trace_features(struct qeth_card *card) 5098 { 5099 QETH_CARD_TEXT(card, 2, "features"); 5100 QETH_CARD_HEX(card, 2, &card->options.ipa4, sizeof(card->options.ipa4)); 5101 QETH_CARD_HEX(card, 2, &card->options.ipa6, sizeof(card->options.ipa6)); 5102 QETH_CARD_HEX(card, 2, &card->options.adp, sizeof(card->options.adp)); 5103 QETH_CARD_HEX(card, 2, &card->info.diagass_support, 5104 sizeof(card->info.diagass_support)); 5105 } 5106 EXPORT_SYMBOL_GPL(qeth_trace_features); 5107 5108 static struct ccw_device_id qeth_ids[] = { 5109 {CCW_DEVICE_DEVTYPE(0x1731, 0x01, 0x1732, 0x01), 5110 .driver_info = QETH_CARD_TYPE_OSD}, 5111 {CCW_DEVICE_DEVTYPE(0x1731, 0x05, 0x1732, 0x05), 5112 .driver_info = QETH_CARD_TYPE_IQD}, 5113 {CCW_DEVICE_DEVTYPE(0x1731, 0x06, 0x1732, 0x06), 5114 .driver_info = QETH_CARD_TYPE_OSN}, 5115 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x03), 5116 .driver_info = QETH_CARD_TYPE_OSM}, 5117 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x02), 5118 .driver_info = QETH_CARD_TYPE_OSX}, 5119 {}, 5120 }; 5121 MODULE_DEVICE_TABLE(ccw, qeth_ids); 5122 5123 static struct ccw_driver qeth_ccw_driver = { 5124 .driver = { 5125 .owner = THIS_MODULE, 5126 .name = "qeth", 5127 }, 5128 .ids = qeth_ids, 5129 .probe = ccwgroup_probe_ccwdev, 5130 .remove = ccwgroup_remove_ccwdev, 5131 }; 5132 5133 int qeth_core_hardsetup_card(struct qeth_card *card) 5134 { 5135 int retries = 3; 5136 int rc; 5137 5138 QETH_DBF_TEXT(SETUP, 2, "hrdsetup"); 5139 atomic_set(&card->force_alloc_skb, 0); 5140 qeth_update_from_chp_desc(card); 5141 retry: 5142 if (retries < 3) 5143 QETH_DBF_MESSAGE(2, "%s Retrying to do IDX activates.\n", 5144 dev_name(&card->gdev->dev)); 5145 rc = qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD); 5146 ccw_device_set_offline(CARD_DDEV(card)); 5147 ccw_device_set_offline(CARD_WDEV(card)); 5148 ccw_device_set_offline(CARD_RDEV(card)); 5149 qdio_free(CARD_DDEV(card)); 5150 rc = ccw_device_set_online(CARD_RDEV(card)); 5151 if (rc) 5152 goto retriable; 5153 rc = ccw_device_set_online(CARD_WDEV(card)); 5154 if (rc) 5155 goto retriable; 5156 rc = ccw_device_set_online(CARD_DDEV(card)); 5157 if (rc) 5158 goto retriable; 5159 retriable: 5160 if (rc == -ERESTARTSYS) { 5161 QETH_DBF_TEXT(SETUP, 2, "break1"); 5162 return rc; 5163 } else if (rc) { 5164 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 5165 if (--retries < 0) 5166 goto out; 5167 else 5168 goto retry; 5169 } 5170 qeth_determine_capabilities(card); 5171 qeth_init_tokens(card); 5172 qeth_init_func_level(card); 5173 rc = qeth_idx_activate_channel(&card->read, qeth_idx_read_cb); 5174 if (rc == -ERESTARTSYS) { 5175 QETH_DBF_TEXT(SETUP, 2, "break2"); 5176 return rc; 5177 } else if (rc) { 5178 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc); 5179 if (--retries < 0) 5180 goto out; 5181 else 5182 goto retry; 5183 } 5184 rc = qeth_idx_activate_channel(&card->write, qeth_idx_write_cb); 5185 if (rc == -ERESTARTSYS) { 5186 QETH_DBF_TEXT(SETUP, 2, "break3"); 5187 return rc; 5188 } else if (rc) { 5189 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc); 5190 if (--retries < 0) 5191 goto out; 5192 else 5193 goto retry; 5194 } 5195 card->read_or_write_problem = 0; 5196 rc = qeth_mpc_initialize(card); 5197 if (rc) { 5198 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc); 5199 goto out; 5200 } 5201 5202 rc = qeth_send_startlan(card); 5203 if (rc) { 5204 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc); 5205 if (rc == IPA_RC_LAN_OFFLINE) { 5206 dev_warn(&card->gdev->dev, 5207 "The LAN is offline\n"); 5208 card->lan_online = 0; 5209 } else { 5210 rc = -ENODEV; 5211 goto out; 5212 } 5213 } else 5214 card->lan_online = 1; 5215 5216 card->options.ipa4.supported_funcs = 0; 5217 card->options.ipa6.supported_funcs = 0; 5218 card->options.adp.supported_funcs = 0; 5219 card->options.sbp.supported_funcs = 0; 5220 card->info.diagass_support = 0; 5221 rc = qeth_query_ipassists(card, QETH_PROT_IPV4); 5222 if (rc == -ENOMEM) 5223 goto out; 5224 if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) { 5225 rc = qeth_query_setadapterparms(card); 5226 if (rc < 0) { 5227 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc); 5228 goto out; 5229 } 5230 } 5231 if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) { 5232 rc = qeth_query_setdiagass(card); 5233 if (rc < 0) { 5234 QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc); 5235 goto out; 5236 } 5237 } 5238 return 0; 5239 out: 5240 dev_warn(&card->gdev->dev, "The qeth device driver failed to recover " 5241 "an error on the device\n"); 5242 QETH_DBF_MESSAGE(2, "%s Initialization in hardsetup failed! rc=%d\n", 5243 dev_name(&card->gdev->dev), rc); 5244 return rc; 5245 } 5246 EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card); 5247 5248 static void qeth_create_skb_frag(struct qdio_buffer_element *element, 5249 struct sk_buff *skb, int offset, int data_len) 5250 { 5251 struct page *page = virt_to_page(element->addr); 5252 unsigned int next_frag; 5253 5254 /* first fill the linear space */ 5255 if (!skb->len) { 5256 unsigned int linear = min(data_len, skb_tailroom(skb)); 5257 5258 skb_put_data(skb, element->addr + offset, linear); 5259 data_len -= linear; 5260 if (!data_len) 5261 return; 5262 offset += linear; 5263 /* fall through to add page frag for remaining data */ 5264 } 5265 5266 next_frag = skb_shinfo(skb)->nr_frags; 5267 get_page(page); 5268 skb_add_rx_frag(skb, next_frag, page, offset, data_len, data_len); 5269 } 5270 5271 static inline int qeth_is_last_sbale(struct qdio_buffer_element *sbale) 5272 { 5273 return (sbale->eflags & SBAL_EFLAGS_LAST_ENTRY); 5274 } 5275 5276 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card, 5277 struct qeth_qdio_buffer *qethbuffer, 5278 struct qdio_buffer_element **__element, int *__offset, 5279 struct qeth_hdr **hdr) 5280 { 5281 struct qdio_buffer_element *element = *__element; 5282 struct qdio_buffer *buffer = qethbuffer->buffer; 5283 int offset = *__offset; 5284 struct sk_buff *skb; 5285 int skb_len = 0; 5286 void *data_ptr; 5287 int data_len; 5288 int headroom = 0; 5289 int use_rx_sg = 0; 5290 5291 /* qeth_hdr must not cross element boundaries */ 5292 while (element->length < offset + sizeof(struct qeth_hdr)) { 5293 if (qeth_is_last_sbale(element)) 5294 return NULL; 5295 element++; 5296 offset = 0; 5297 } 5298 *hdr = element->addr + offset; 5299 5300 offset += sizeof(struct qeth_hdr); 5301 switch ((*hdr)->hdr.l2.id) { 5302 case QETH_HEADER_TYPE_LAYER2: 5303 skb_len = (*hdr)->hdr.l2.pkt_length; 5304 break; 5305 case QETH_HEADER_TYPE_LAYER3: 5306 skb_len = (*hdr)->hdr.l3.length; 5307 headroom = ETH_HLEN; 5308 break; 5309 case QETH_HEADER_TYPE_OSN: 5310 skb_len = (*hdr)->hdr.osn.pdu_length; 5311 headroom = sizeof(struct qeth_hdr); 5312 break; 5313 default: 5314 break; 5315 } 5316 5317 if (!skb_len) 5318 return NULL; 5319 5320 if (((skb_len >= card->options.rx_sg_cb) && 5321 (!(card->info.type == QETH_CARD_TYPE_OSN)) && 5322 (!atomic_read(&card->force_alloc_skb))) || 5323 (card->options.cq == QETH_CQ_ENABLED)) 5324 use_rx_sg = 1; 5325 5326 if (use_rx_sg && qethbuffer->rx_skb) { 5327 /* QETH_CQ_ENABLED only: */ 5328 skb = qethbuffer->rx_skb; 5329 qethbuffer->rx_skb = NULL; 5330 } else { 5331 unsigned int linear = (use_rx_sg) ? QETH_RX_PULL_LEN : skb_len; 5332 5333 skb = dev_alloc_skb(linear + headroom); 5334 } 5335 if (!skb) 5336 goto no_mem; 5337 if (headroom) 5338 skb_reserve(skb, headroom); 5339 5340 data_ptr = element->addr + offset; 5341 while (skb_len) { 5342 data_len = min(skb_len, (int)(element->length - offset)); 5343 if (data_len) { 5344 if (use_rx_sg) 5345 qeth_create_skb_frag(element, skb, offset, 5346 data_len); 5347 else 5348 skb_put_data(skb, data_ptr, data_len); 5349 } 5350 skb_len -= data_len; 5351 if (skb_len) { 5352 if (qeth_is_last_sbale(element)) { 5353 QETH_CARD_TEXT(card, 4, "unexeob"); 5354 QETH_CARD_HEX(card, 2, buffer, sizeof(void *)); 5355 dev_kfree_skb_any(skb); 5356 card->stats.rx_errors++; 5357 return NULL; 5358 } 5359 element++; 5360 offset = 0; 5361 data_ptr = element->addr; 5362 } else { 5363 offset += data_len; 5364 } 5365 } 5366 *__element = element; 5367 *__offset = offset; 5368 if (use_rx_sg && card->options.performance_stats) { 5369 card->perf_stats.sg_skbs_rx++; 5370 card->perf_stats.sg_frags_rx += skb_shinfo(skb)->nr_frags; 5371 } 5372 return skb; 5373 no_mem: 5374 if (net_ratelimit()) { 5375 QETH_CARD_TEXT(card, 2, "noskbmem"); 5376 } 5377 card->stats.rx_dropped++; 5378 return NULL; 5379 } 5380 EXPORT_SYMBOL_GPL(qeth_core_get_next_skb); 5381 5382 int qeth_poll(struct napi_struct *napi, int budget) 5383 { 5384 struct qeth_card *card = container_of(napi, struct qeth_card, napi); 5385 int work_done = 0; 5386 struct qeth_qdio_buffer *buffer; 5387 int done; 5388 int new_budget = budget; 5389 5390 if (card->options.performance_stats) { 5391 card->perf_stats.inbound_cnt++; 5392 card->perf_stats.inbound_start_time = qeth_get_micros(); 5393 } 5394 5395 while (1) { 5396 if (!card->rx.b_count) { 5397 card->rx.qdio_err = 0; 5398 card->rx.b_count = qdio_get_next_buffers( 5399 card->data.ccwdev, 0, &card->rx.b_index, 5400 &card->rx.qdio_err); 5401 if (card->rx.b_count <= 0) { 5402 card->rx.b_count = 0; 5403 break; 5404 } 5405 card->rx.b_element = 5406 &card->qdio.in_q->bufs[card->rx.b_index] 5407 .buffer->element[0]; 5408 card->rx.e_offset = 0; 5409 } 5410 5411 while (card->rx.b_count) { 5412 buffer = &card->qdio.in_q->bufs[card->rx.b_index]; 5413 if (!(card->rx.qdio_err && 5414 qeth_check_qdio_errors(card, buffer->buffer, 5415 card->rx.qdio_err, "qinerr"))) 5416 work_done += 5417 card->discipline->process_rx_buffer( 5418 card, new_budget, &done); 5419 else 5420 done = 1; 5421 5422 if (done) { 5423 if (card->options.performance_stats) 5424 card->perf_stats.bufs_rec++; 5425 qeth_put_buffer_pool_entry(card, 5426 buffer->pool_entry); 5427 qeth_queue_input_buffer(card, card->rx.b_index); 5428 card->rx.b_count--; 5429 if (card->rx.b_count) { 5430 card->rx.b_index = 5431 (card->rx.b_index + 1) % 5432 QDIO_MAX_BUFFERS_PER_Q; 5433 card->rx.b_element = 5434 &card->qdio.in_q 5435 ->bufs[card->rx.b_index] 5436 .buffer->element[0]; 5437 card->rx.e_offset = 0; 5438 } 5439 } 5440 5441 if (work_done >= budget) 5442 goto out; 5443 else 5444 new_budget = budget - work_done; 5445 } 5446 } 5447 5448 napi_complete_done(napi, work_done); 5449 if (qdio_start_irq(card->data.ccwdev, 0)) 5450 napi_schedule(&card->napi); 5451 out: 5452 if (card->options.performance_stats) 5453 card->perf_stats.inbound_time += qeth_get_micros() - 5454 card->perf_stats.inbound_start_time; 5455 return work_done; 5456 } 5457 EXPORT_SYMBOL_GPL(qeth_poll); 5458 5459 static int qeth_setassparms_inspect_rc(struct qeth_ipa_cmd *cmd) 5460 { 5461 if (!cmd->hdr.return_code) 5462 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code; 5463 return cmd->hdr.return_code; 5464 } 5465 5466 int qeth_setassparms_cb(struct qeth_card *card, 5467 struct qeth_reply *reply, unsigned long data) 5468 { 5469 struct qeth_ipa_cmd *cmd; 5470 5471 QETH_CARD_TEXT(card, 4, "defadpcb"); 5472 5473 cmd = (struct qeth_ipa_cmd *) data; 5474 if (cmd->hdr.return_code == 0) { 5475 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code; 5476 if (cmd->hdr.prot_version == QETH_PROT_IPV4) 5477 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled; 5478 if (cmd->hdr.prot_version == QETH_PROT_IPV6) 5479 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled; 5480 } 5481 return 0; 5482 } 5483 EXPORT_SYMBOL_GPL(qeth_setassparms_cb); 5484 5485 struct qeth_cmd_buffer *qeth_get_setassparms_cmd(struct qeth_card *card, 5486 enum qeth_ipa_funcs ipa_func, 5487 __u16 cmd_code, __u16 len, 5488 enum qeth_prot_versions prot) 5489 { 5490 struct qeth_cmd_buffer *iob; 5491 struct qeth_ipa_cmd *cmd; 5492 5493 QETH_CARD_TEXT(card, 4, "getasscm"); 5494 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETASSPARMS, prot); 5495 5496 if (iob) { 5497 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 5498 cmd->data.setassparms.hdr.assist_no = ipa_func; 5499 cmd->data.setassparms.hdr.length = 8 + len; 5500 cmd->data.setassparms.hdr.command_code = cmd_code; 5501 cmd->data.setassparms.hdr.return_code = 0; 5502 cmd->data.setassparms.hdr.seq_no = 0; 5503 } 5504 5505 return iob; 5506 } 5507 EXPORT_SYMBOL_GPL(qeth_get_setassparms_cmd); 5508 5509 int qeth_send_setassparms(struct qeth_card *card, 5510 struct qeth_cmd_buffer *iob, __u16 len, long data, 5511 int (*reply_cb)(struct qeth_card *, 5512 struct qeth_reply *, unsigned long), 5513 void *reply_param) 5514 { 5515 int rc; 5516 struct qeth_ipa_cmd *cmd; 5517 5518 QETH_CARD_TEXT(card, 4, "sendassp"); 5519 5520 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 5521 if (len <= sizeof(__u32)) 5522 cmd->data.setassparms.data.flags_32bit = (__u32) data; 5523 else /* (len > sizeof(__u32)) */ 5524 memcpy(&cmd->data.setassparms.data, (void *) data, len); 5525 5526 rc = qeth_send_ipa_cmd(card, iob, reply_cb, reply_param); 5527 return rc; 5528 } 5529 EXPORT_SYMBOL_GPL(qeth_send_setassparms); 5530 5531 int qeth_send_simple_setassparms(struct qeth_card *card, 5532 enum qeth_ipa_funcs ipa_func, 5533 __u16 cmd_code, long data) 5534 { 5535 int rc; 5536 int length = 0; 5537 struct qeth_cmd_buffer *iob; 5538 5539 QETH_CARD_TEXT(card, 4, "simassp4"); 5540 if (data) 5541 length = sizeof(__u32); 5542 iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code, 5543 length, QETH_PROT_IPV4); 5544 if (!iob) 5545 return -ENOMEM; 5546 rc = qeth_send_setassparms(card, iob, length, data, 5547 qeth_setassparms_cb, NULL); 5548 return rc; 5549 } 5550 EXPORT_SYMBOL_GPL(qeth_send_simple_setassparms); 5551 5552 static void qeth_unregister_dbf_views(void) 5553 { 5554 int x; 5555 for (x = 0; x < QETH_DBF_INFOS; x++) { 5556 debug_unregister(qeth_dbf[x].id); 5557 qeth_dbf[x].id = NULL; 5558 } 5559 } 5560 5561 void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...) 5562 { 5563 char dbf_txt_buf[32]; 5564 va_list args; 5565 5566 if (!debug_level_enabled(id, level)) 5567 return; 5568 va_start(args, fmt); 5569 vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args); 5570 va_end(args); 5571 debug_text_event(id, level, dbf_txt_buf); 5572 } 5573 EXPORT_SYMBOL_GPL(qeth_dbf_longtext); 5574 5575 static int qeth_register_dbf_views(void) 5576 { 5577 int ret; 5578 int x; 5579 5580 for (x = 0; x < QETH_DBF_INFOS; x++) { 5581 /* register the areas */ 5582 qeth_dbf[x].id = debug_register(qeth_dbf[x].name, 5583 qeth_dbf[x].pages, 5584 qeth_dbf[x].areas, 5585 qeth_dbf[x].len); 5586 if (qeth_dbf[x].id == NULL) { 5587 qeth_unregister_dbf_views(); 5588 return -ENOMEM; 5589 } 5590 5591 /* register a view */ 5592 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view); 5593 if (ret) { 5594 qeth_unregister_dbf_views(); 5595 return ret; 5596 } 5597 5598 /* set a passing level */ 5599 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level); 5600 } 5601 5602 return 0; 5603 } 5604 5605 int qeth_core_load_discipline(struct qeth_card *card, 5606 enum qeth_discipline_id discipline) 5607 { 5608 int rc = 0; 5609 5610 mutex_lock(&qeth_mod_mutex); 5611 switch (discipline) { 5612 case QETH_DISCIPLINE_LAYER3: 5613 card->discipline = try_then_request_module( 5614 symbol_get(qeth_l3_discipline), "qeth_l3"); 5615 break; 5616 case QETH_DISCIPLINE_LAYER2: 5617 card->discipline = try_then_request_module( 5618 symbol_get(qeth_l2_discipline), "qeth_l2"); 5619 break; 5620 default: 5621 break; 5622 } 5623 5624 if (!card->discipline) { 5625 dev_err(&card->gdev->dev, "There is no kernel module to " 5626 "support discipline %d\n", discipline); 5627 rc = -EINVAL; 5628 } 5629 mutex_unlock(&qeth_mod_mutex); 5630 return rc; 5631 } 5632 5633 void qeth_core_free_discipline(struct qeth_card *card) 5634 { 5635 if (card->options.layer2) 5636 symbol_put(qeth_l2_discipline); 5637 else 5638 symbol_put(qeth_l3_discipline); 5639 card->discipline = NULL; 5640 } 5641 5642 const struct device_type qeth_generic_devtype = { 5643 .name = "qeth_generic", 5644 .groups = qeth_generic_attr_groups, 5645 }; 5646 EXPORT_SYMBOL_GPL(qeth_generic_devtype); 5647 5648 static const struct device_type qeth_osn_devtype = { 5649 .name = "qeth_osn", 5650 .groups = qeth_osn_attr_groups, 5651 }; 5652 5653 #define DBF_NAME_LEN 20 5654 5655 struct qeth_dbf_entry { 5656 char dbf_name[DBF_NAME_LEN]; 5657 debug_info_t *dbf_info; 5658 struct list_head dbf_list; 5659 }; 5660 5661 static LIST_HEAD(qeth_dbf_list); 5662 static DEFINE_MUTEX(qeth_dbf_list_mutex); 5663 5664 static debug_info_t *qeth_get_dbf_entry(char *name) 5665 { 5666 struct qeth_dbf_entry *entry; 5667 debug_info_t *rc = NULL; 5668 5669 mutex_lock(&qeth_dbf_list_mutex); 5670 list_for_each_entry(entry, &qeth_dbf_list, dbf_list) { 5671 if (strcmp(entry->dbf_name, name) == 0) { 5672 rc = entry->dbf_info; 5673 break; 5674 } 5675 } 5676 mutex_unlock(&qeth_dbf_list_mutex); 5677 return rc; 5678 } 5679 5680 static int qeth_add_dbf_entry(struct qeth_card *card, char *name) 5681 { 5682 struct qeth_dbf_entry *new_entry; 5683 5684 card->debug = debug_register(name, 2, 1, 8); 5685 if (!card->debug) { 5686 QETH_DBF_TEXT_(SETUP, 2, "%s", "qcdbf"); 5687 goto err; 5688 } 5689 if (debug_register_view(card->debug, &debug_hex_ascii_view)) 5690 goto err_dbg; 5691 new_entry = kzalloc(sizeof(struct qeth_dbf_entry), GFP_KERNEL); 5692 if (!new_entry) 5693 goto err_dbg; 5694 strncpy(new_entry->dbf_name, name, DBF_NAME_LEN); 5695 new_entry->dbf_info = card->debug; 5696 mutex_lock(&qeth_dbf_list_mutex); 5697 list_add(&new_entry->dbf_list, &qeth_dbf_list); 5698 mutex_unlock(&qeth_dbf_list_mutex); 5699 5700 return 0; 5701 5702 err_dbg: 5703 debug_unregister(card->debug); 5704 err: 5705 return -ENOMEM; 5706 } 5707 5708 static void qeth_clear_dbf_list(void) 5709 { 5710 struct qeth_dbf_entry *entry, *tmp; 5711 5712 mutex_lock(&qeth_dbf_list_mutex); 5713 list_for_each_entry_safe(entry, tmp, &qeth_dbf_list, dbf_list) { 5714 list_del(&entry->dbf_list); 5715 debug_unregister(entry->dbf_info); 5716 kfree(entry); 5717 } 5718 mutex_unlock(&qeth_dbf_list_mutex); 5719 } 5720 5721 static int qeth_core_probe_device(struct ccwgroup_device *gdev) 5722 { 5723 struct qeth_card *card; 5724 struct device *dev; 5725 int rc; 5726 enum qeth_discipline_id enforced_disc; 5727 unsigned long flags; 5728 char dbf_name[DBF_NAME_LEN]; 5729 5730 QETH_DBF_TEXT(SETUP, 2, "probedev"); 5731 5732 dev = &gdev->dev; 5733 if (!get_device(dev)) 5734 return -ENODEV; 5735 5736 QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev)); 5737 5738 card = qeth_alloc_card(); 5739 if (!card) { 5740 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM); 5741 rc = -ENOMEM; 5742 goto err_dev; 5743 } 5744 5745 snprintf(dbf_name, sizeof(dbf_name), "qeth_card_%s", 5746 dev_name(&gdev->dev)); 5747 card->debug = qeth_get_dbf_entry(dbf_name); 5748 if (!card->debug) { 5749 rc = qeth_add_dbf_entry(card, dbf_name); 5750 if (rc) 5751 goto err_card; 5752 } 5753 5754 card->read.ccwdev = gdev->cdev[0]; 5755 card->write.ccwdev = gdev->cdev[1]; 5756 card->data.ccwdev = gdev->cdev[2]; 5757 dev_set_drvdata(&gdev->dev, card); 5758 card->gdev = gdev; 5759 gdev->cdev[0]->handler = qeth_irq; 5760 gdev->cdev[1]->handler = qeth_irq; 5761 gdev->cdev[2]->handler = qeth_irq; 5762 5763 qeth_determine_card_type(card); 5764 rc = qeth_setup_card(card); 5765 if (rc) { 5766 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc); 5767 goto err_card; 5768 } 5769 5770 qeth_determine_capabilities(card); 5771 enforced_disc = qeth_enforce_discipline(card); 5772 switch (enforced_disc) { 5773 case QETH_DISCIPLINE_UNDETERMINED: 5774 gdev->dev.type = &qeth_generic_devtype; 5775 break; 5776 default: 5777 card->info.layer_enforced = true; 5778 rc = qeth_core_load_discipline(card, enforced_disc); 5779 if (rc) 5780 goto err_card; 5781 5782 gdev->dev.type = (card->info.type != QETH_CARD_TYPE_OSN) 5783 ? card->discipline->devtype 5784 : &qeth_osn_devtype; 5785 rc = card->discipline->setup(card->gdev); 5786 if (rc) 5787 goto err_disc; 5788 break; 5789 } 5790 5791 write_lock_irqsave(&qeth_core_card_list.rwlock, flags); 5792 list_add_tail(&card->list, &qeth_core_card_list.list); 5793 write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags); 5794 return 0; 5795 5796 err_disc: 5797 qeth_core_free_discipline(card); 5798 err_card: 5799 qeth_core_free_card(card); 5800 err_dev: 5801 put_device(dev); 5802 return rc; 5803 } 5804 5805 static void qeth_core_remove_device(struct ccwgroup_device *gdev) 5806 { 5807 unsigned long flags; 5808 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5809 5810 QETH_DBF_TEXT(SETUP, 2, "removedv"); 5811 5812 if (card->discipline) { 5813 card->discipline->remove(gdev); 5814 qeth_core_free_discipline(card); 5815 } 5816 5817 write_lock_irqsave(&qeth_core_card_list.rwlock, flags); 5818 list_del(&card->list); 5819 write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags); 5820 qeth_core_free_card(card); 5821 dev_set_drvdata(&gdev->dev, NULL); 5822 put_device(&gdev->dev); 5823 return; 5824 } 5825 5826 static int qeth_core_set_online(struct ccwgroup_device *gdev) 5827 { 5828 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5829 int rc = 0; 5830 enum qeth_discipline_id def_discipline; 5831 5832 if (!card->discipline) { 5833 if (card->info.type == QETH_CARD_TYPE_IQD) 5834 def_discipline = QETH_DISCIPLINE_LAYER3; 5835 else 5836 def_discipline = QETH_DISCIPLINE_LAYER2; 5837 rc = qeth_core_load_discipline(card, def_discipline); 5838 if (rc) 5839 goto err; 5840 rc = card->discipline->setup(card->gdev); 5841 if (rc) { 5842 qeth_core_free_discipline(card); 5843 goto err; 5844 } 5845 } 5846 rc = card->discipline->set_online(gdev); 5847 err: 5848 return rc; 5849 } 5850 5851 static int qeth_core_set_offline(struct ccwgroup_device *gdev) 5852 { 5853 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5854 return card->discipline->set_offline(gdev); 5855 } 5856 5857 static void qeth_core_shutdown(struct ccwgroup_device *gdev) 5858 { 5859 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5860 qeth_set_allowed_threads(card, 0, 1); 5861 if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap) 5862 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM); 5863 qeth_qdio_clear_card(card, 0); 5864 qeth_clear_qdio_buffers(card); 5865 qdio_free(CARD_DDEV(card)); 5866 } 5867 5868 static int qeth_core_freeze(struct ccwgroup_device *gdev) 5869 { 5870 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5871 if (card->discipline && card->discipline->freeze) 5872 return card->discipline->freeze(gdev); 5873 return 0; 5874 } 5875 5876 static int qeth_core_thaw(struct ccwgroup_device *gdev) 5877 { 5878 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5879 if (card->discipline && card->discipline->thaw) 5880 return card->discipline->thaw(gdev); 5881 return 0; 5882 } 5883 5884 static int qeth_core_restore(struct ccwgroup_device *gdev) 5885 { 5886 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 5887 if (card->discipline && card->discipline->restore) 5888 return card->discipline->restore(gdev); 5889 return 0; 5890 } 5891 5892 static struct ccwgroup_driver qeth_core_ccwgroup_driver = { 5893 .driver = { 5894 .owner = THIS_MODULE, 5895 .name = "qeth", 5896 }, 5897 .ccw_driver = &qeth_ccw_driver, 5898 .setup = qeth_core_probe_device, 5899 .remove = qeth_core_remove_device, 5900 .set_online = qeth_core_set_online, 5901 .set_offline = qeth_core_set_offline, 5902 .shutdown = qeth_core_shutdown, 5903 .prepare = NULL, 5904 .complete = NULL, 5905 .freeze = qeth_core_freeze, 5906 .thaw = qeth_core_thaw, 5907 .restore = qeth_core_restore, 5908 }; 5909 5910 static ssize_t group_store(struct device_driver *ddrv, const char *buf, 5911 size_t count) 5912 { 5913 int err; 5914 5915 err = ccwgroup_create_dev(qeth_core_root_dev, 5916 &qeth_core_ccwgroup_driver, 3, buf); 5917 5918 return err ? err : count; 5919 } 5920 static DRIVER_ATTR_WO(group); 5921 5922 static struct attribute *qeth_drv_attrs[] = { 5923 &driver_attr_group.attr, 5924 NULL, 5925 }; 5926 static struct attribute_group qeth_drv_attr_group = { 5927 .attrs = qeth_drv_attrs, 5928 }; 5929 static const struct attribute_group *qeth_drv_attr_groups[] = { 5930 &qeth_drv_attr_group, 5931 NULL, 5932 }; 5933 5934 int qeth_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) 5935 { 5936 struct qeth_card *card = dev->ml_priv; 5937 struct mii_ioctl_data *mii_data; 5938 int rc = 0; 5939 5940 if (!card) 5941 return -ENODEV; 5942 5943 if (!qeth_card_hw_is_reachable(card)) 5944 return -ENODEV; 5945 5946 if (card->info.type == QETH_CARD_TYPE_OSN) 5947 return -EPERM; 5948 5949 switch (cmd) { 5950 case SIOC_QETH_ADP_SET_SNMP_CONTROL: 5951 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data); 5952 break; 5953 case SIOC_QETH_GET_CARD_TYPE: 5954 if ((card->info.type == QETH_CARD_TYPE_OSD || 5955 card->info.type == QETH_CARD_TYPE_OSM || 5956 card->info.type == QETH_CARD_TYPE_OSX) && 5957 !card->info.guestlan) 5958 return 1; 5959 else 5960 return 0; 5961 case SIOCGMIIPHY: 5962 mii_data = if_mii(rq); 5963 mii_data->phy_id = 0; 5964 break; 5965 case SIOCGMIIREG: 5966 mii_data = if_mii(rq); 5967 if (mii_data->phy_id != 0) 5968 rc = -EINVAL; 5969 else 5970 mii_data->val_out = qeth_mdio_read(dev, 5971 mii_data->phy_id, mii_data->reg_num); 5972 break; 5973 case SIOC_QETH_QUERY_OAT: 5974 rc = qeth_query_oat_command(card, rq->ifr_ifru.ifru_data); 5975 break; 5976 default: 5977 if (card->discipline->do_ioctl) 5978 rc = card->discipline->do_ioctl(dev, rq, cmd); 5979 else 5980 rc = -EOPNOTSUPP; 5981 } 5982 if (rc) 5983 QETH_CARD_TEXT_(card, 2, "ioce%x", rc); 5984 return rc; 5985 } 5986 EXPORT_SYMBOL_GPL(qeth_do_ioctl); 5987 5988 static struct { 5989 const char str[ETH_GSTRING_LEN]; 5990 } qeth_ethtool_stats_keys[] = { 5991 /* 0 */{"rx skbs"}, 5992 {"rx buffers"}, 5993 {"tx skbs"}, 5994 {"tx buffers"}, 5995 {"tx skbs no packing"}, 5996 {"tx buffers no packing"}, 5997 {"tx skbs packing"}, 5998 {"tx buffers packing"}, 5999 {"tx sg skbs"}, 6000 {"tx sg frags"}, 6001 /* 10 */{"rx sg skbs"}, 6002 {"rx sg frags"}, 6003 {"rx sg page allocs"}, 6004 {"tx large kbytes"}, 6005 {"tx large count"}, 6006 {"tx pk state ch n->p"}, 6007 {"tx pk state ch p->n"}, 6008 {"tx pk watermark low"}, 6009 {"tx pk watermark high"}, 6010 {"queue 0 buffer usage"}, 6011 /* 20 */{"queue 1 buffer usage"}, 6012 {"queue 2 buffer usage"}, 6013 {"queue 3 buffer usage"}, 6014 {"rx poll time"}, 6015 {"rx poll count"}, 6016 {"rx do_QDIO time"}, 6017 {"rx do_QDIO count"}, 6018 {"tx handler time"}, 6019 {"tx handler count"}, 6020 {"tx time"}, 6021 /* 30 */{"tx count"}, 6022 {"tx do_QDIO time"}, 6023 {"tx do_QDIO count"}, 6024 {"tx csum"}, 6025 {"tx lin"}, 6026 {"tx linfail"}, 6027 {"cq handler count"}, 6028 {"cq handler time"} 6029 }; 6030 6031 int qeth_core_get_sset_count(struct net_device *dev, int stringset) 6032 { 6033 switch (stringset) { 6034 case ETH_SS_STATS: 6035 return (sizeof(qeth_ethtool_stats_keys) / ETH_GSTRING_LEN); 6036 default: 6037 return -EINVAL; 6038 } 6039 } 6040 EXPORT_SYMBOL_GPL(qeth_core_get_sset_count); 6041 6042 void qeth_core_get_ethtool_stats(struct net_device *dev, 6043 struct ethtool_stats *stats, u64 *data) 6044 { 6045 struct qeth_card *card = dev->ml_priv; 6046 data[0] = card->stats.rx_packets - 6047 card->perf_stats.initial_rx_packets; 6048 data[1] = card->perf_stats.bufs_rec; 6049 data[2] = card->stats.tx_packets - 6050 card->perf_stats.initial_tx_packets; 6051 data[3] = card->perf_stats.bufs_sent; 6052 data[4] = card->stats.tx_packets - card->perf_stats.initial_tx_packets 6053 - card->perf_stats.skbs_sent_pack; 6054 data[5] = card->perf_stats.bufs_sent - card->perf_stats.bufs_sent_pack; 6055 data[6] = card->perf_stats.skbs_sent_pack; 6056 data[7] = card->perf_stats.bufs_sent_pack; 6057 data[8] = card->perf_stats.sg_skbs_sent; 6058 data[9] = card->perf_stats.sg_frags_sent; 6059 data[10] = card->perf_stats.sg_skbs_rx; 6060 data[11] = card->perf_stats.sg_frags_rx; 6061 data[12] = card->perf_stats.sg_alloc_page_rx; 6062 data[13] = (card->perf_stats.large_send_bytes >> 10); 6063 data[14] = card->perf_stats.large_send_cnt; 6064 data[15] = card->perf_stats.sc_dp_p; 6065 data[16] = card->perf_stats.sc_p_dp; 6066 data[17] = QETH_LOW_WATERMARK_PACK; 6067 data[18] = QETH_HIGH_WATERMARK_PACK; 6068 data[19] = atomic_read(&card->qdio.out_qs[0]->used_buffers); 6069 data[20] = (card->qdio.no_out_queues > 1) ? 6070 atomic_read(&card->qdio.out_qs[1]->used_buffers) : 0; 6071 data[21] = (card->qdio.no_out_queues > 2) ? 6072 atomic_read(&card->qdio.out_qs[2]->used_buffers) : 0; 6073 data[22] = (card->qdio.no_out_queues > 3) ? 6074 atomic_read(&card->qdio.out_qs[3]->used_buffers) : 0; 6075 data[23] = card->perf_stats.inbound_time; 6076 data[24] = card->perf_stats.inbound_cnt; 6077 data[25] = card->perf_stats.inbound_do_qdio_time; 6078 data[26] = card->perf_stats.inbound_do_qdio_cnt; 6079 data[27] = card->perf_stats.outbound_handler_time; 6080 data[28] = card->perf_stats.outbound_handler_cnt; 6081 data[29] = card->perf_stats.outbound_time; 6082 data[30] = card->perf_stats.outbound_cnt; 6083 data[31] = card->perf_stats.outbound_do_qdio_time; 6084 data[32] = card->perf_stats.outbound_do_qdio_cnt; 6085 data[33] = card->perf_stats.tx_csum; 6086 data[34] = card->perf_stats.tx_lin; 6087 data[35] = card->perf_stats.tx_linfail; 6088 data[36] = card->perf_stats.cq_cnt; 6089 data[37] = card->perf_stats.cq_time; 6090 } 6091 EXPORT_SYMBOL_GPL(qeth_core_get_ethtool_stats); 6092 6093 void qeth_core_get_strings(struct net_device *dev, u32 stringset, u8 *data) 6094 { 6095 switch (stringset) { 6096 case ETH_SS_STATS: 6097 memcpy(data, &qeth_ethtool_stats_keys, 6098 sizeof(qeth_ethtool_stats_keys)); 6099 break; 6100 default: 6101 WARN_ON(1); 6102 break; 6103 } 6104 } 6105 EXPORT_SYMBOL_GPL(qeth_core_get_strings); 6106 6107 void qeth_core_get_drvinfo(struct net_device *dev, 6108 struct ethtool_drvinfo *info) 6109 { 6110 struct qeth_card *card = dev->ml_priv; 6111 6112 strlcpy(info->driver, card->options.layer2 ? "qeth_l2" : "qeth_l3", 6113 sizeof(info->driver)); 6114 strlcpy(info->version, "1.0", sizeof(info->version)); 6115 strlcpy(info->fw_version, card->info.mcl_level, 6116 sizeof(info->fw_version)); 6117 snprintf(info->bus_info, sizeof(info->bus_info), "%s/%s/%s", 6118 CARD_RDEV_ID(card), CARD_WDEV_ID(card), CARD_DDEV_ID(card)); 6119 } 6120 EXPORT_SYMBOL_GPL(qeth_core_get_drvinfo); 6121 6122 /* Helper function to fill 'advertising' and 'supported' which are the same. */ 6123 /* Autoneg and full-duplex are supported and advertised unconditionally. */ 6124 /* Always advertise and support all speeds up to specified, and only one */ 6125 /* specified port type. */ 6126 static void qeth_set_cmd_adv_sup(struct ethtool_link_ksettings *cmd, 6127 int maxspeed, int porttype) 6128 { 6129 ethtool_link_ksettings_zero_link_mode(cmd, supported); 6130 ethtool_link_ksettings_zero_link_mode(cmd, advertising); 6131 ethtool_link_ksettings_zero_link_mode(cmd, lp_advertising); 6132 6133 ethtool_link_ksettings_add_link_mode(cmd, supported, Autoneg); 6134 ethtool_link_ksettings_add_link_mode(cmd, advertising, Autoneg); 6135 6136 switch (porttype) { 6137 case PORT_TP: 6138 ethtool_link_ksettings_add_link_mode(cmd, supported, TP); 6139 ethtool_link_ksettings_add_link_mode(cmd, advertising, TP); 6140 break; 6141 case PORT_FIBRE: 6142 ethtool_link_ksettings_add_link_mode(cmd, supported, FIBRE); 6143 ethtool_link_ksettings_add_link_mode(cmd, advertising, FIBRE); 6144 break; 6145 default: 6146 ethtool_link_ksettings_add_link_mode(cmd, supported, TP); 6147 ethtool_link_ksettings_add_link_mode(cmd, advertising, TP); 6148 WARN_ON_ONCE(1); 6149 } 6150 6151 /* fallthrough from high to low, to select all legal speeds: */ 6152 switch (maxspeed) { 6153 case SPEED_10000: 6154 ethtool_link_ksettings_add_link_mode(cmd, supported, 6155 10000baseT_Full); 6156 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6157 10000baseT_Full); 6158 case SPEED_1000: 6159 ethtool_link_ksettings_add_link_mode(cmd, supported, 6160 1000baseT_Full); 6161 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6162 1000baseT_Full); 6163 ethtool_link_ksettings_add_link_mode(cmd, supported, 6164 1000baseT_Half); 6165 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6166 1000baseT_Half); 6167 case SPEED_100: 6168 ethtool_link_ksettings_add_link_mode(cmd, supported, 6169 100baseT_Full); 6170 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6171 100baseT_Full); 6172 ethtool_link_ksettings_add_link_mode(cmd, supported, 6173 100baseT_Half); 6174 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6175 100baseT_Half); 6176 case SPEED_10: 6177 ethtool_link_ksettings_add_link_mode(cmd, supported, 6178 10baseT_Full); 6179 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6180 10baseT_Full); 6181 ethtool_link_ksettings_add_link_mode(cmd, supported, 6182 10baseT_Half); 6183 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6184 10baseT_Half); 6185 /* end fallthrough */ 6186 break; 6187 default: 6188 ethtool_link_ksettings_add_link_mode(cmd, supported, 6189 10baseT_Full); 6190 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6191 10baseT_Full); 6192 ethtool_link_ksettings_add_link_mode(cmd, supported, 6193 10baseT_Half); 6194 ethtool_link_ksettings_add_link_mode(cmd, advertising, 6195 10baseT_Half); 6196 WARN_ON_ONCE(1); 6197 } 6198 } 6199 6200 int qeth_core_ethtool_get_link_ksettings(struct net_device *netdev, 6201 struct ethtool_link_ksettings *cmd) 6202 { 6203 struct qeth_card *card = netdev->ml_priv; 6204 enum qeth_link_types link_type; 6205 struct carrier_info carrier_info; 6206 int rc; 6207 6208 if ((card->info.type == QETH_CARD_TYPE_IQD) || (card->info.guestlan)) 6209 link_type = QETH_LINK_TYPE_10GBIT_ETH; 6210 else 6211 link_type = card->info.link_type; 6212 6213 cmd->base.duplex = DUPLEX_FULL; 6214 cmd->base.autoneg = AUTONEG_ENABLE; 6215 cmd->base.phy_address = 0; 6216 cmd->base.mdio_support = 0; 6217 cmd->base.eth_tp_mdix = ETH_TP_MDI_INVALID; 6218 cmd->base.eth_tp_mdix_ctrl = ETH_TP_MDI_INVALID; 6219 6220 switch (link_type) { 6221 case QETH_LINK_TYPE_FAST_ETH: 6222 case QETH_LINK_TYPE_LANE_ETH100: 6223 cmd->base.speed = SPEED_100; 6224 cmd->base.port = PORT_TP; 6225 break; 6226 case QETH_LINK_TYPE_GBIT_ETH: 6227 case QETH_LINK_TYPE_LANE_ETH1000: 6228 cmd->base.speed = SPEED_1000; 6229 cmd->base.port = PORT_FIBRE; 6230 break; 6231 case QETH_LINK_TYPE_10GBIT_ETH: 6232 cmd->base.speed = SPEED_10000; 6233 cmd->base.port = PORT_FIBRE; 6234 break; 6235 default: 6236 cmd->base.speed = SPEED_10; 6237 cmd->base.port = PORT_TP; 6238 } 6239 qeth_set_cmd_adv_sup(cmd, cmd->base.speed, cmd->base.port); 6240 6241 /* Check if we can obtain more accurate information. */ 6242 /* If QUERY_CARD_INFO command is not supported or fails, */ 6243 /* just return the heuristics that was filled above. */ 6244 if (!qeth_card_hw_is_reachable(card)) 6245 return -ENODEV; 6246 rc = qeth_query_card_info(card, &carrier_info); 6247 if (rc == -EOPNOTSUPP) /* for old hardware, return heuristic */ 6248 return 0; 6249 if (rc) /* report error from the hardware operation */ 6250 return rc; 6251 /* on success, fill in the information got from the hardware */ 6252 6253 netdev_dbg(netdev, 6254 "card info: card_type=0x%02x, port_mode=0x%04x, port_speed=0x%08x\n", 6255 carrier_info.card_type, 6256 carrier_info.port_mode, 6257 carrier_info.port_speed); 6258 6259 /* Update attributes for which we've obtained more authoritative */ 6260 /* information, leave the rest the way they where filled above. */ 6261 switch (carrier_info.card_type) { 6262 case CARD_INFO_TYPE_1G_COPPER_A: 6263 case CARD_INFO_TYPE_1G_COPPER_B: 6264 cmd->base.port = PORT_TP; 6265 qeth_set_cmd_adv_sup(cmd, SPEED_1000, cmd->base.port); 6266 break; 6267 case CARD_INFO_TYPE_1G_FIBRE_A: 6268 case CARD_INFO_TYPE_1G_FIBRE_B: 6269 cmd->base.port = PORT_FIBRE; 6270 qeth_set_cmd_adv_sup(cmd, SPEED_1000, cmd->base.port); 6271 break; 6272 case CARD_INFO_TYPE_10G_FIBRE_A: 6273 case CARD_INFO_TYPE_10G_FIBRE_B: 6274 cmd->base.port = PORT_FIBRE; 6275 qeth_set_cmd_adv_sup(cmd, SPEED_10000, cmd->base.port); 6276 break; 6277 } 6278 6279 switch (carrier_info.port_mode) { 6280 case CARD_INFO_PORTM_FULLDUPLEX: 6281 cmd->base.duplex = DUPLEX_FULL; 6282 break; 6283 case CARD_INFO_PORTM_HALFDUPLEX: 6284 cmd->base.duplex = DUPLEX_HALF; 6285 break; 6286 } 6287 6288 switch (carrier_info.port_speed) { 6289 case CARD_INFO_PORTS_10M: 6290 cmd->base.speed = SPEED_10; 6291 break; 6292 case CARD_INFO_PORTS_100M: 6293 cmd->base.speed = SPEED_100; 6294 break; 6295 case CARD_INFO_PORTS_1G: 6296 cmd->base.speed = SPEED_1000; 6297 break; 6298 case CARD_INFO_PORTS_10G: 6299 cmd->base.speed = SPEED_10000; 6300 break; 6301 } 6302 6303 return 0; 6304 } 6305 EXPORT_SYMBOL_GPL(qeth_core_ethtool_get_link_ksettings); 6306 6307 /* Callback to handle checksum offload command reply from OSA card. 6308 * Verify that required features have been enabled on the card. 6309 * Return error in hdr->return_code as this value is checked by caller. 6310 * 6311 * Always returns zero to indicate no further messages from the OSA card. 6312 */ 6313 static int qeth_ipa_checksum_run_cmd_cb(struct qeth_card *card, 6314 struct qeth_reply *reply, 6315 unsigned long data) 6316 { 6317 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 6318 struct qeth_checksum_cmd *chksum_cb = 6319 (struct qeth_checksum_cmd *)reply->param; 6320 6321 QETH_CARD_TEXT(card, 4, "chkdoccb"); 6322 if (qeth_setassparms_inspect_rc(cmd)) 6323 return 0; 6324 6325 memset(chksum_cb, 0, sizeof(*chksum_cb)); 6326 if (cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) { 6327 chksum_cb->supported = 6328 cmd->data.setassparms.data.chksum.supported; 6329 QETH_CARD_TEXT_(card, 3, "strt:%x", chksum_cb->supported); 6330 } 6331 if (cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_ENABLE) { 6332 chksum_cb->supported = 6333 cmd->data.setassparms.data.chksum.supported; 6334 chksum_cb->enabled = 6335 cmd->data.setassparms.data.chksum.enabled; 6336 QETH_CARD_TEXT_(card, 3, "supp:%x", chksum_cb->supported); 6337 QETH_CARD_TEXT_(card, 3, "enab:%x", chksum_cb->enabled); 6338 } 6339 return 0; 6340 } 6341 6342 /* Send command to OSA card and check results. */ 6343 static int qeth_ipa_checksum_run_cmd(struct qeth_card *card, 6344 enum qeth_ipa_funcs ipa_func, 6345 __u16 cmd_code, long data, 6346 struct qeth_checksum_cmd *chksum_cb) 6347 { 6348 struct qeth_cmd_buffer *iob; 6349 int rc = -ENOMEM; 6350 6351 QETH_CARD_TEXT(card, 4, "chkdocmd"); 6352 iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code, 6353 sizeof(__u32), QETH_PROT_IPV4); 6354 if (iob) 6355 rc = qeth_send_setassparms(card, iob, sizeof(__u32), data, 6356 qeth_ipa_checksum_run_cmd_cb, 6357 chksum_cb); 6358 return rc; 6359 } 6360 6361 static int qeth_send_checksum_on(struct qeth_card *card, int cstype) 6362 { 6363 const __u32 required_features = QETH_IPA_CHECKSUM_IP_HDR | 6364 QETH_IPA_CHECKSUM_UDP | 6365 QETH_IPA_CHECKSUM_TCP; 6366 struct qeth_checksum_cmd chksum_cb; 6367 int rc; 6368 6369 rc = qeth_ipa_checksum_run_cmd(card, cstype, IPA_CMD_ASS_START, 0, 6370 &chksum_cb); 6371 if (!rc) { 6372 if ((required_features & chksum_cb.supported) != 6373 required_features) 6374 rc = -EIO; 6375 else if (!(QETH_IPA_CHECKSUM_LP2LP & chksum_cb.supported) && 6376 cstype == IPA_INBOUND_CHECKSUM) 6377 dev_warn(&card->gdev->dev, 6378 "Hardware checksumming is performed only if %s and its peer use different OSA Express 3 ports\n", 6379 QETH_CARD_IFNAME(card)); 6380 } 6381 if (rc) { 6382 qeth_send_simple_setassparms(card, cstype, IPA_CMD_ASS_STOP, 0); 6383 dev_warn(&card->gdev->dev, 6384 "Starting HW checksumming for %s failed, using SW checksumming\n", 6385 QETH_CARD_IFNAME(card)); 6386 return rc; 6387 } 6388 rc = qeth_ipa_checksum_run_cmd(card, cstype, IPA_CMD_ASS_ENABLE, 6389 chksum_cb.supported, &chksum_cb); 6390 if (!rc) { 6391 if ((required_features & chksum_cb.enabled) != 6392 required_features) 6393 rc = -EIO; 6394 } 6395 if (rc) { 6396 qeth_send_simple_setassparms(card, cstype, IPA_CMD_ASS_STOP, 0); 6397 dev_warn(&card->gdev->dev, 6398 "Enabling HW checksumming for %s failed, using SW checksumming\n", 6399 QETH_CARD_IFNAME(card)); 6400 return rc; 6401 } 6402 6403 dev_info(&card->gdev->dev, "HW Checksumming (%sbound) enabled\n", 6404 cstype == IPA_INBOUND_CHECKSUM ? "in" : "out"); 6405 return 0; 6406 } 6407 6408 static int qeth_set_ipa_csum(struct qeth_card *card, int on, int cstype) 6409 { 6410 int rc = (on) ? qeth_send_checksum_on(card, cstype) 6411 : qeth_send_simple_setassparms(card, cstype, 6412 IPA_CMD_ASS_STOP, 0); 6413 return rc ? -EIO : 0; 6414 } 6415 6416 static int qeth_set_ipa_tso(struct qeth_card *card, int on) 6417 { 6418 int rc; 6419 6420 QETH_CARD_TEXT(card, 3, "sttso"); 6421 6422 if (on) { 6423 rc = qeth_send_simple_setassparms(card, IPA_OUTBOUND_TSO, 6424 IPA_CMD_ASS_START, 0); 6425 if (rc) { 6426 dev_warn(&card->gdev->dev, 6427 "Starting outbound TCP segmentation offload for %s failed\n", 6428 QETH_CARD_IFNAME(card)); 6429 return -EIO; 6430 } 6431 dev_info(&card->gdev->dev, "Outbound TSO enabled\n"); 6432 } else { 6433 rc = qeth_send_simple_setassparms(card, IPA_OUTBOUND_TSO, 6434 IPA_CMD_ASS_STOP, 0); 6435 } 6436 return rc; 6437 } 6438 6439 #define QETH_HW_FEATURES (NETIF_F_RXCSUM | NETIF_F_IP_CSUM | NETIF_F_TSO) 6440 6441 /** 6442 * qeth_recover_features() - Restore device features after recovery 6443 * @dev: the recovering net_device 6444 * 6445 * Caller must hold rtnl lock. 6446 */ 6447 void qeth_recover_features(struct net_device *dev) 6448 { 6449 netdev_features_t features = dev->features; 6450 struct qeth_card *card = dev->ml_priv; 6451 6452 /* force-off any feature that needs an IPA sequence. 6453 * netdev_update_features() will restart them. 6454 */ 6455 dev->features &= ~QETH_HW_FEATURES; 6456 netdev_update_features(dev); 6457 6458 if (features == dev->features) 6459 return; 6460 dev_warn(&card->gdev->dev, 6461 "Device recovery failed to restore all offload features\n"); 6462 } 6463 EXPORT_SYMBOL_GPL(qeth_recover_features); 6464 6465 int qeth_set_features(struct net_device *dev, netdev_features_t features) 6466 { 6467 struct qeth_card *card = dev->ml_priv; 6468 netdev_features_t changed = dev->features ^ features; 6469 int rc = 0; 6470 6471 QETH_DBF_TEXT(SETUP, 2, "setfeat"); 6472 QETH_DBF_HEX(SETUP, 2, &features, sizeof(features)); 6473 6474 if ((changed & NETIF_F_IP_CSUM)) { 6475 rc = qeth_set_ipa_csum(card, 6476 features & NETIF_F_IP_CSUM ? 1 : 0, 6477 IPA_OUTBOUND_CHECKSUM); 6478 if (rc) 6479 changed ^= NETIF_F_IP_CSUM; 6480 } 6481 if ((changed & NETIF_F_RXCSUM)) { 6482 rc = qeth_set_ipa_csum(card, 6483 features & NETIF_F_RXCSUM ? 1 : 0, 6484 IPA_INBOUND_CHECKSUM); 6485 if (rc) 6486 changed ^= NETIF_F_RXCSUM; 6487 } 6488 if ((changed & NETIF_F_TSO)) { 6489 rc = qeth_set_ipa_tso(card, features & NETIF_F_TSO ? 1 : 0); 6490 if (rc) 6491 changed ^= NETIF_F_TSO; 6492 } 6493 6494 /* everything changed successfully? */ 6495 if ((dev->features ^ features) == changed) 6496 return 0; 6497 /* something went wrong. save changed features and return error */ 6498 dev->features ^= changed; 6499 return -EIO; 6500 } 6501 EXPORT_SYMBOL_GPL(qeth_set_features); 6502 6503 netdev_features_t qeth_fix_features(struct net_device *dev, 6504 netdev_features_t features) 6505 { 6506 struct qeth_card *card = dev->ml_priv; 6507 6508 QETH_DBF_TEXT(SETUP, 2, "fixfeat"); 6509 if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM)) 6510 features &= ~NETIF_F_IP_CSUM; 6511 if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM)) 6512 features &= ~NETIF_F_RXCSUM; 6513 if (!qeth_is_supported(card, IPA_OUTBOUND_TSO)) 6514 features &= ~NETIF_F_TSO; 6515 /* if the card isn't up, remove features that require hw changes */ 6516 if (card->state == CARD_STATE_DOWN || 6517 card->state == CARD_STATE_RECOVER) 6518 features &= ~QETH_HW_FEATURES; 6519 QETH_DBF_HEX(SETUP, 2, &features, sizeof(features)); 6520 return features; 6521 } 6522 EXPORT_SYMBOL_GPL(qeth_fix_features); 6523 6524 netdev_features_t qeth_features_check(struct sk_buff *skb, 6525 struct net_device *dev, 6526 netdev_features_t features) 6527 { 6528 /* GSO segmentation builds skbs with 6529 * a (small) linear part for the headers, and 6530 * page frags for the data. 6531 * Compared to a linear skb, the header-only part consumes an 6532 * additional buffer element. This reduces buffer utilization, and 6533 * hurts throughput. So compress small segments into one element. 6534 */ 6535 if (netif_needs_gso(skb, features)) { 6536 /* match skb_segment(): */ 6537 unsigned int doffset = skb->data - skb_mac_header(skb); 6538 unsigned int hsize = skb_shinfo(skb)->gso_size; 6539 unsigned int hroom = skb_headroom(skb); 6540 6541 /* linearize only if resulting skb allocations are order-0: */ 6542 if (SKB_DATA_ALIGN(hroom + doffset + hsize) <= SKB_MAX_HEAD(0)) 6543 features &= ~NETIF_F_SG; 6544 } 6545 6546 return vlan_features_check(skb, features); 6547 } 6548 EXPORT_SYMBOL_GPL(qeth_features_check); 6549 6550 static int __init qeth_core_init(void) 6551 { 6552 int rc; 6553 6554 pr_info("loading core functions\n"); 6555 INIT_LIST_HEAD(&qeth_core_card_list.list); 6556 INIT_LIST_HEAD(&qeth_dbf_list); 6557 rwlock_init(&qeth_core_card_list.rwlock); 6558 mutex_init(&qeth_mod_mutex); 6559 6560 qeth_wq = create_singlethread_workqueue("qeth_wq"); 6561 6562 rc = qeth_register_dbf_views(); 6563 if (rc) 6564 goto out_err; 6565 qeth_core_root_dev = root_device_register("qeth"); 6566 rc = PTR_ERR_OR_ZERO(qeth_core_root_dev); 6567 if (rc) 6568 goto register_err; 6569 qeth_core_header_cache = kmem_cache_create("qeth_hdr", 6570 sizeof(struct qeth_hdr) + ETH_HLEN, 64, 0, NULL); 6571 if (!qeth_core_header_cache) { 6572 rc = -ENOMEM; 6573 goto slab_err; 6574 } 6575 qeth_qdio_outbuf_cache = kmem_cache_create("qeth_buf", 6576 sizeof(struct qeth_qdio_out_buffer), 0, 0, NULL); 6577 if (!qeth_qdio_outbuf_cache) { 6578 rc = -ENOMEM; 6579 goto cqslab_err; 6580 } 6581 rc = ccw_driver_register(&qeth_ccw_driver); 6582 if (rc) 6583 goto ccw_err; 6584 qeth_core_ccwgroup_driver.driver.groups = qeth_drv_attr_groups; 6585 rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver); 6586 if (rc) 6587 goto ccwgroup_err; 6588 6589 return 0; 6590 6591 ccwgroup_err: 6592 ccw_driver_unregister(&qeth_ccw_driver); 6593 ccw_err: 6594 kmem_cache_destroy(qeth_qdio_outbuf_cache); 6595 cqslab_err: 6596 kmem_cache_destroy(qeth_core_header_cache); 6597 slab_err: 6598 root_device_unregister(qeth_core_root_dev); 6599 register_err: 6600 qeth_unregister_dbf_views(); 6601 out_err: 6602 pr_err("Initializing the qeth device driver failed\n"); 6603 return rc; 6604 } 6605 6606 static void __exit qeth_core_exit(void) 6607 { 6608 qeth_clear_dbf_list(); 6609 destroy_workqueue(qeth_wq); 6610 ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver); 6611 ccw_driver_unregister(&qeth_ccw_driver); 6612 kmem_cache_destroy(qeth_qdio_outbuf_cache); 6613 kmem_cache_destroy(qeth_core_header_cache); 6614 root_device_unregister(qeth_core_root_dev); 6615 qeth_unregister_dbf_views(); 6616 pr_info("core functions removed\n"); 6617 } 6618 6619 module_init(qeth_core_init); 6620 module_exit(qeth_core_exit); 6621 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>"); 6622 MODULE_DESCRIPTION("qeth core functions"); 6623 MODULE_LICENSE("GPL"); 6624